The pH can be expressed mathematically as log10[H+], which is the negative logarithm of the molar concentration of hydrogen ions in the solution.
How do you calculate pH of acid rain?See below for a pH scale for acid rain.Explained: The hydrogen ion concentration within a solution is expressed by pH.According to mathematics, pH is equal to log 10 [H + ], or the negative logarithm of the molar concentration of hydrogen ions in the solution.For any relevant solution in issue, we would need to perform this computation to establish its pH level.Since rainwater naturally has a modest acidity, the pH of the sampled solution will differ from that of the rainwater. Around 5 to 5.5 would be the typical pH range for rainwater.We can anticipate a lower pH level, about 4, in the case of acid rain.To Learn more About Ph refer to:
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Using the relationships you have learned about the temperature pressure and volume what are two ways you can increase the gas pressure of the system
The pressure of the gas can be increased by increasing the temperature of the gas. The second way to increase the pressure of the gas is by decreasing the volume of gas.
What is the ideal gas equation?The ideal gas law can be defined as a general form to represent the state of an ideal gas. The ideal equation describes the relationship between, the volume, pressure, and temperature of the gas.
The ideal gas law can be represented mathematically as follows:
PV = nRT
where P is the pressure, n is the amount of substance, V is the volume, and R is the gas constant.
From the above equation, we can say that the pressure of the gas is inversely proportional to the volume of the gas and directly proportional to the temperature of the gas.
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What has a relative atomic mass of 7?.
Lithium has an atomic mass of seven. A relative atomic mass of 80 applies to bromine. 16g of lithium and 183g of bromine were discovered in a substance.
Lithium salts, another name for certain lithium compounds, are used as medications. In certain diseases, it can occasionally lower the risk. One consumes oral lithium. lithium can help decrease abnormal activity in the brain.
The mass of an atom is its atomic mass. Atomic mass is frequently stated in the non-Systematic unit unit Dalton, or unified atomic mass unit, even though the Systematic unit of mass is the kilogram. Protons, neutrons, and electrons in an atom have an average mass, which is known as atomic mass.
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in a ________ reaction, two or more elements or compounds form one product.
To solve such this we must know the concept of double displacement reaction. Therefore, the blank should be filled with word chemical.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved.
There are so many types of chemical reaction reaction like combination reaction, double displacement reaction. In a chemical reaction, two or more elements or compounds form one product.
Therefore, the blank should be filled with word chemical.
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Which list is comprised of only physical properties of matter?.
Color, roughness, machinability, solubility, electrical properties, density, melting point, as well as boiling point are examples of the physical characteristics of matter.
A matter is what in chemistry?Anything that fills space and seems to have mass is referred to as matter; in other words, matter is the "stuff" that the cosmos is comprised of. Elements are the fundamental building blocks of all matter. They possess unique chemical and physical characteristics and cannot be converted into other elements by regular chemical processes.
What does it mean of matter to use an example?A material with a given mass and a certain volume throughout space generally referred to by the term matter. Examples of matters are pens, pencils, toothbrushes, water, and milk, as well as vehicles like cars, buses, and bicycles.
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Ibuprofen, a common headache remedy, has an empirical formula of c7h9o and a molar mass of approximately 215 g/mol. What is the molecular formula for ibuprofen?.
Answer: C13H18O2
Explanation:
Aqueous solutions of (a) Mn2; (b) Al3; (c) Ni2; (d) Au3 with concentrations of 1.0 mol/L are electrolyzed at pH 7. For each solution, determine whether the metal ion or water will be reduced at the cathode.
Mn⁺², Al⁺³, Ni⁺² and Au⁺³ metals will be reduced at the cathode because their reduction potential is higher than water.
The group of potentials known as standard electrodes or standard cells includes the standard reduction potential. The standard cell potential is the difference in potential between the cathode and anode. For more information, view Cell Potentials. The standard potentials are all calculated at 298 K, 1 atm, and 1 M solutions.
Standard oxidation and reduction potentials are extremely similar to one another. A species' susceptibility to experience oxidation under typical conditions. It is also written in a half-reactionary manner. The standard oxidation potential and the standard reduction potential have the opposite sign for the same chemical species.
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What is EP measured in physics?.
Ep = mgh. energy associated with gravity. Ep = mgh. The labor required to lift an object is equal to the gravitational potential energy it contains.
What is the best way to define potential energy?Potential energy is simply stored energy that has the capacity to perform work as a result of the location or state of the object in question. Potential energy is described as the energy held within a system of physically interfering entities in more physics-focused terminology.
Can potential energy be negative?Because of where you choose to establish your zero point—the location at which your potential energy is zero—potential energy may also be negative. A book on a table has more potential energy than the floor, which is the potential energy zero.
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Draw the fischer projections of the four aldotetroses. Draw the d‑sugar on the left and its l‑isomer directly to the right of it. Be sure you select the appropriate hydroxy group so that the bond carbon is connected to the oxygen bond.
The Fischer projections of the four aldotetroses, D- glucose, and L‑glucose are shown in the attached figures below.
What are Fischer's projections?In chemistry, the Fischer projection can be described as a two-dimensional representation of a 3-D organic molecule by projection. Fischer projections were proposed for carbohydrates and used by chemists, particularly in organic chemistry and biochemistry.
The main aim of Fischer projections is to show the chirality of a molecule and to differentiate between a pair of enantiomers. Some notable uses involve drawing sugars and depicting isomers.
All chemical bonds are represented as horizontal lines or vertical lines. The carbon chain is represented vertically and represented by the center of crossing lines. The orientation of the carbon chain is represented in such a way that the first carbon C₁ is at the top.
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If 4.50 mol of ethane, C2H6, undergo combustion according to the unbalanced equation C2H6+ O2 CO2 + H20, how many moles of each product are formed?
Taking into account the reaction stoichiometry, 9 moles of CO₂ and 13.5 grams of H₂O are formed if 4.50 mol of ethane undergo combustion.
Reaction stoichiometryIn first place, the balanced reaction is:
2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
C₂H₆: 2 molesO₂: 7 molesCO₂: 4 gramsH₂O: 6 molesMoles of each product formedThe following rule of three can be applied:
if by reaction stoichiometry 2 moles of C₂H₆ form 4 moles of CO₂, 4.50 moles of C₂H₆ form how many moles of CO₂?moles of CO₂= (4.50 moles of C₂H₆×4 moles of CO₂)÷ 2 moles of C₂H₆
moles of CO₂= 9 moles
if by reaction stoichiometry 2 moles of C₂H₆ form 6 moles of H₂O, 4.50 moles of C₂H₆ form how many moles of H₂O?moles of H₂O= (4.50 moles of C₂H₆×6 moles of H₂O)÷ 2 moles of C₂H₆
moles of H₂O= 13.5 moles
Finally, 9 moles of CO₂ and 13.5 grams of H₂O are formed.
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Identify the oxidizing agent and the reducing agent for the following reaction: 2Rb()Cl2(g)→2RbCl()
In the given reaction, Cl₂ is an oxidizing agent, and Rb is a reducing agent.
2Rb + Cl₂(g) → 2RbCl
Here, Cl₂ is an oxidizing agent.
Rb is a reducing agent.
The oxidizing agent is a substance that causes oxidation by accepting electrons; therefore, its oxidation state decreases.
The reducing agent is a substance that causes reduction by losing electrons; therefore its oxidation state increases.
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Useiing the thermodynamic informationm in ALEKS Data Tab calcule the boiling point of hydrogen peroxide (H2O2). Round your answer to the nearest
Based on the thermodynamic calculations, the boiling point of hydrogen peroxide was determined to be 418.69 K.
The liquid's boiling point can be given as :
Boiling point =ΔH / ΔS
The table below lists the enthalpy and entropy values for both liquid and gaseous hydrogen peroxide.
The following is the value of the change in enthalpy ( ΔH ) for boiling hydrogen peroxide:
ΔH = ΔH(gas) - ΔH(liquid)
ΔH = - 136.3 - ( - 187.8 )
ΔH = - 136.3 + 187.8
ΔH = 51.5 KJ/mol
The following is the value of the change in entropy ( ΔS ) for boiling hydrogen peroxide:
ΔS = ΔS(gas) - ΔS(liquid)
ΔS = 233 - 110
ΔS = 123 J/mol.K
The formula for hydrogen peroxide's boiling point is:
Boiling point = [tex]\frac{ 51500 J/mol}{ 123 J/mol.K}[/tex]
Boiling point = 418.69 K
Based on the thermodynamic calculations, the boiling point of hydrogen peroxide was determined to be 418.69 K.
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upon heating, 201. ml of water was evaporated from 279. ml of 0.701 m c6h12o6(aq). what is the resulting concentration of this solution?
The concentration of the resulting solution after evaporation is 2.50M.
The volume of glucose solution before heating is 279 ml and 0.701M and the after heating, 201 ml of water is released.
We know,
Moles = Molarity x Volume
Moles of Glucose = 0.701 x 279
Now, after the water is evaporated, the volume of the glucose is 78 ml. The moles of glucose will remain constant even after evaporation.
Now, we can find the concentration of the solution as,
Concentration = moles/volume
Putting values,
Concentration = 0.701 x 279 / 78
Concentration = 2.5M.
So, the concentration of the solution is 2.5M.
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When the equation NH4NO3 → N2O H2O is balanced the coefficient of N2O is?.
N2O's coefficient is equal to 4 when the equation NH4NO3 = N2O + H2O is balanced.
NH4NO3 is it a liquid or a solid?Commercially, ammonium nitrate is offered as both a colorless crystalline solid and as prills that have been treated for certain uses. water soluble. Does not naturally burn, but if in contact with combustible material, it will.
Is covalent NH4NO3 ionic?Covalent and ionic bonding are present in ammonium nitrate (NH 4 NO 3). Ammonium cation and Nitrate anion join forces to form an ionic connection. Since covalent bonds connect the atoms of nitrogen and hydrogen, the statement about ammonium nitrate is accurate.
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if the resistivity of copper is less than that of gold at room temperature, which of the following statements must be true? if the resistivity of copper is less than that of gold at room temperature, which of the following statements must be true?
When accelerated by the same electric field at room temperature, the electrons in gold are more likely to be scattered than the electrons in copper if the resistivity of copper is lower than that of gold. So, (C) is the correct choice.
A material's electrical resistivity, which measures how strongly it resists electric current, can be thought of as a fundamental property. A material with such a low resistivity is a substance that easily permits electric current. The Greek letter is often used to signify resistivity ρ (rho). Electrical resistivity is measured in ohm-meters (Ω-m), or S.I.
So, When accelerated by the same electric field at room temperature, gold electrons are more likely to be scattered than copper electrons.
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Which area of number sense relates to the quantity of ingredients in recipes? a is an area of number sense that relates to the quantity of ingredients in recipes.
Measurement refers to the area of number sense that relates to the quantity of ingredients in recipes.
There are three types of ingredients;
Dry ingredientsSpoon measures Liquid ingredientsDry ingredients can be measured by using flat-cup measures. Ingredients should be level. The best way to level the ingredients are Running the back of a flat-bladed knife across the surface.
Spoon measures must be measured with the correct sized spoon. They are constructed either of plastic or metal.
Liquid ingredients should be measured in jugs.
The recipe ingredients can be weighted or measured by volume. The units for expressing volume are cm³, m³ and litres etc.
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according to either the lab manual or materials posted on canvas, which isomer of heptene has the longest retention time?
The 1-heptene. cis 2-heptene. trans 2-heptene has the longest retention time.
What is isomers?
Isomers are substances that contain precisely the same number of atoms, i.e., they have the exact same empirical formula, but they differ from one another by the arrangement of the atoms.
What is heptane?
A straight-chain alkane containing seven carbon atoms is called heptane. In Jeffrey pine, it was discovered (Pinus jeffreyi). In addition to being a plant metabolite, it serves as a non-polar solvent. It is both an alkane and an organic volatile substance.
Therefore, 1-heptene. cis 2-heptene. trans 2-heptene has the longest retention time.
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draw the lewis structure of iodine trifluoride, if3. do not include brackets or formal charges. if the molecule exhibits resonance, draw only one (1) structure. do not draw the other resonance forms.
Each atom's octet and the hydrogen molecule's duet are depicted in the Lewis structure in a full manner.
The Lewis structural rule is what.
Only one bond may be formed by hydrogen atoms, and they are always found at the extremities of a chain of atoms. Carbon, nitrogen, or oxygen are frequently bonded with hydrogen. With the exception of O2, O3, superoxides, and peroxides, oxygen atoms typically do not connect to one another.
Describe Lewis's structure with an example.
Lewis structure illustration
The octet rule, which states that atoms share electrons so that each has eight in its outer shell, is the foundation of a Lewis structure. For instance, the outermost electron of an oxygen atom possesses six protons.
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Was the Grand Canyon formed by water or wind?.
The grand canyon formed by the water.
The grand canyon is formed by the water erosion. the grand canyon is very beautiful feature on the earth. water has the tremendous power of erosion. when water will carry the large amount of sediment and the rock, same as the river will does in the of flooding. the length is about 450 km long. as the river will flows it will cut the sediments in to the smaller rocks this will the shape and the structure of the grand canyon. the river is flowing through the grand canyon from about 5 to 6 millions back.
Thus, The grand canyon formed by the water.
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What substance can move across a barrier by osmosis? give the name, not the formula.
The substance which can move across a barrier by the process of osmosis is water substance.
Osmosis is defined as a process in which the solvent molecules are passed through a semi-permeable membrane from a lower concentrated region to the higher concentrated region. The osmosis is a passive process, which drives the internal energy of the solvent molecules. Some examples of osmosis process are diffusion of gases like O₂ and CO₂, diffusion of benzene and ethanol etc. In this method, the solution is passed through the semi-permeable membrane and the solvent is separated from the solution. When solvent is separated, then the solution is diluted.
Therefore, water molecule can move across a barrier by osmosis.
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What are the 3 primary methods of chemical exposure?.
Ingestion, dermal exposure, and inhalation are indeed the three main exposure routes.
What instances from chemistry?The substances, such as copper, nitrogen, and oxygen, as well as compounds comprised of components like alcohol, carbon dioxide, and salt, as well as more complicated materials, such as a computers, the air you breathe, precipitation, a chicken, a car, etc., are examples of chemicals.
What materials make up chemical?Chemicals are another name for matter, which is everything composed of atoms. Chemicals are the buildings you can create using atoms as the building pieces in a LEGO set. They could be solid, liquid, or gas in any form. Chemical can be a combination or a pure substance.
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if a calculation calls for you to convert from an amount of one substance in a given chemical reaction to the corresponding amount of another substance participating in the same reaction, it is an equation stoichiometric incorrect: your answer is incorrect. problem.
Stoichiometry uses the proportional nature of chemical equations to determine the amount of reactant needed to produce a given amount of product or predict the amount that will be produced from a given amount of reactant.
Stoichiometry is precisely that. it's far the quantitative relation between the range of moles of numerous products and reactants in a chemical response. Chemical reactions should be balanced, or in different phrases, need to have the identical variety of various atoms in the products as inside the reactants.
Stoichiometry, via definition, is the calculation of the portions of reactants or merchandise in a chemical response using the relationships determined within the balanced chemical equation. previously, you learned to balance chemical equations by using evaluating the numbers of every kind of atom inside the reactants and products.
In a chemical reaction, reactants that aren't used up while the reaction is completed are called extra reagents. The reagent that is completely used up or reacted is called the proscribing reagent, because its amount limits the amount of products fashioned.
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2. explain your thoughts on whether or not using solely nmr is a good method to make positive ids of chemicals.
No NMR is not a good method to make positive ids of chemicals.
Nuclear magnetic resonance cannot provide information on functional groups but can provide information on any compound. If any compound has two or more functional groups then it becomes more difficult to identify any of them. Therefore, NMR is not a good method to make positive ids of chemicals.
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which statement describes the direction of proton movement relative to electron transfer and phosphorylation?A. Electron transfer pumps protons out of the matrix. As the protons reenter through the ATP synthase, ATP is produced in the matrix.
B. Electron transfer pumps protons into the matrix. As the protons leave the matrix through the ATP synthase, ATP is produced in the matrix
C. Electron transfer pumps protons into the matrix. As the protons leave the matrix through the ATP synthase, ATP is produced on the opposite side of the membrane.
Electron transfer pumps protons out of the matrix. As the protons reenter through the ATP synthase, ATP is produced in the matrix.
What is meant by electron?A negatively charged subatomic particle known as an electron can either be free or attached to an atom (not bound). One of the three main types of particles within an atom is an electron that is bonded to it; the other two are protons and neutrons.
The words electric and ion are combined to form the word electron. In turn, electron is derived from the suffix -on, which is currently used to describe other subatomic particles, such as a proton or neutron.
The atom is made up of the subatomic particles electron, proton, and neutron. The atom is made up of a core nucleus that has neutrons and protons in it. The electrons that surround the nucleus.. Neutrons are neutral, protons are positively charged, and electrons are negatively charged.
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In the hydroxide ion, one oxygen atom is joined with one hydrogen atom, giving the ion a total of 9 protons and 10 electrons. What is its formula?
Chemical formula of hydroxide ion is OH[tex]^-[/tex] as the ion has 9 protons and 10 electrons and 1 extra electron results in generation of negative charge on the ion.
What is chemical formula?
Chemical formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols of elements. It also makes use of brackets and subscripts.
Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form is called empirical formula.
It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.
There are four types of chemical formula:
1)empirical formula
2) structural formula
3)condensed formula
4)molecular formula
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alance the following yeast fermentation reaction. the sugar is glucose (c6h12o6) and the products include ethanol (ch3ch2oh) and carbon dioxide (co2). in this case, assume it is an enzyme that breaks down glucose, so oxygen is not a component.
Balance the following yeast fermentation reaction. the sugar is glucose (C₆H₁₂O₆) and the products include ethanol (CH₃CH₂OH) and carbon dioxide (CO₂) is given as :
C₆H₁₂O₆ -----> 2CH₃CH₂OH + 2CO₂
When the yeast is added on the sugar glucose C₆H₁₂O₆ in the absence of the oxygen to form the ethanol and the carbon dioxide is called as fermentation reaction.
C₆H₁₂O₆ -----> CH₃CH₂OH + CO₂
to balance the equation , the no. of atoms in the reactant side is equal to the product side.
reactant product
C 6 3
H 12 6
O 6 3
to balance the equation , multiply 2 in CH₃CH₂OH and 2 in CO₂, we get the balanced equation , :
C₆H₁₂O₆ -----> 2CH₃CH₂OH + 2CO₂
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relationship with coral because they receive protection, carbon dioxide, and nitrogen and phosphorus nutrients from the corals, and in return they provide the corals with oxygen and assistance in removing waste. (Use only one word per blank.)
symbiotic
This above relationship is an example of a symbiotic relationship.
A close, prolonged association between two or more organisms of different species that normally benefits both members is known as a symbiotic relationship. An excellent example of symbiotic relationship is a coral and algae, bacteria in the human gut and many more.
From the information given above, the algae perform photosynthesis, providing the coral with nutrients for feeding and help with calcification. In return, the coral provides nutrients to the algae which helps them for their growth. Symbiotic relationship is also known as mutual relationship as both the members are benefited.
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explain in a paragraph what it means for a reaction to be at equilibrium. include in your answer references to the amounts of reactants and products and the rates of the forward and backward reaction
At equilibrium, the two opposing reactions takes place at equal rates, or velocities, and hence there is no net change in the amounts of substances that are involved.
A chemical reaction is in equilibrium when there is no tendency for the quantities of reactants and products to change. They represent the same chemical reaction system in which the roles of the components are usually reversed, and both yield the same mixture of components when the change is completed fully.
A reversible chemical reaction is one in which the products, as soon as they are formed, react to produce the original reactants back. At equilibrium, generally the two opposing reactions go on at equal rates, or velocities, and hence there is no net change in the amounts of substances involved.
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if 0.0793 mol cacl2 is dissolved in water to make a 0.530 m solution, what is the volume of the solution?
Answer:
I'm assuming you meant mv and not m because metres wouldn't really be in place in this equation...
Explanation:
use equation - v/ n x mv
volume = n x mv
volume = number of moles x litres(mol-1)
volume = 0.0793 x 0.530
volume =0.042029
volume = 0.042
how many protons, neutrons, and electrons are in a neutral hydrogen atom? (consider the most common isotope of hydrogen.)
Neutral hydrogen is made up of hydrogen atoms with one proton and one electron (1H1). A heavy isotope of hydrogen termed deuterium is composed of hydrogen atoms with one proton, one electron, and one neutron (2H1).
What is Neutral hydrogen?An ordinary, electrically neutral hydrogen atom with one proton and one electron is known as neutral hydrogen. It is frequently referred to as HI (pronounced H-one), and it can be found inside galaxies as HI clouds or outside galaxies as intercloud gas.A hydrogen atom has an atomic number of 1. Therefore, it will always have a proton number of 1. No charge exists on a hydrogen atom that is neutral. It therefore possesses 1 protons and the equal number of electrons. One proton and one electron make up a neutral hydrogen atom (1H1). Deuterium is a heavy isotope of hydrogen, composed of hydrogen atoms with one proton, one electron, and one neutron (2H1).To learn more about Neutral hydrogen refer to:
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draw the product formed when oleic acid is hydrogenated. oleic acid is an 18 carbon fatty acid with a double bond between carbons 9 and 10. it reacts with h 2 in the presence of p t.
The product formed when oleic acid is hydrogenated. in the presence of Pt is stearic acid
This reaction is known as hydrogenation of unsaturated fatty acids. It is also known to convert oil into fat. When oleic acid is reacted with hydrogen molecules in the presence of a metal catalyst, i. H.Pt, Ni, etc., hydrogen molecules are added across double bonds and converted to saturated single bonds to produce stearic acid. .
Oleic acid belongs to the class of alkenes, in which carbon-carbon double bond addition forms alkanes as products in the presence of certain catalysts such as nickel, palladium and platinum. This reaction is called a hydrogenation reaction. Oleic acid is composed of 17 carbon atoms bonded to 33 hydrogen atoms and a double bond between two carbon atoms and a carboxyl group. When oleic acid is hydrogenated or reacted with hydrogen in the presence of a catalyst, the addition cleaves the carbon-carbon double bond and produces the alkane product stearic acidis formed.
The chemical reaction is shown in the picture.
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