Balanced chemical equation for reaction of hydronium ions with calcium carbonate will be as follows:
2H3O+ (aq) + CaCO3 (s) => Ca2+ (s) + 3H2O (l) + CO2 (g)
In this balanced chemical equation, acidic aqueous solution of hydronium ion (H3O+) reacts with calcium carbonate salt (CaCO3) resulting in the formation of calcium cation (Ca2+) an alkali, that results in neutralization of excessive acid. It also forms liquid water (H2O) along with liberation of carbon dioxide gas (CO2). All acids stronger than hydrogen carbonate, provide their calcium salts dissolved in water yielding carbon dioxide, because a bare hydrogen ion has no chance of surviving in water.
To balance this chemical equation, 2 molecules of hydronium ions react with 1 molecule of calcium carbonate resulting in formation of 1 molecule of calcium cation, 3 molecules of water and 1 molecule of carbon dioxide. The reaction proceeds at room temperature.
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2H2O2 → 2H2O+O2+196.6 kj.
Hydrogen peroxide decomposes according to the reaction above. How much heat is released during the reaction when 5.0 moles of H2O2 decompose?
2mol of Hydrogen peroxide releases 196.6KJ heat
1mol releases
196.6/298.35mol releases
5(98.3)491.5KJAnswer: 491.5
Explanation:
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What atomic or hybrid orbitals make up the sigma bond between c2 and h in ethylene, ch2ch2?
Explanation:
According to orbital hybridization theory, in ethene the C atoms are using sp2 hybrid orbitals. This leaves one unhybridized p orbital available to form the second bond (Pi bond) in the C-C double bonds.
One sp2 hybrid orbital from each C atom overlap to form one sigma bond between the two carbon atoms. One p orbital from each C atom then overlap to form a pi bond that completes the C-C double bond. The H atoms are bonded via sigma bonds to the C atoms when the H s orbitals overlap with the remaining sp2 hybrid orbitals from each C.
The sensory neurons within the olfactory organ are stimulated by ________ in the air. proteins pressure dust water chemicals
The sensory neurons within the olfactory organ are stimulated by Chemicals in the air.
Sensory neurons are the neurons that take up the signal from the receptors to the Central Nervous system (CNS)
Olfactory organ is the organ which is capable to sense smell i.e. Olfaction.
The Chemicals present in the air stimulates the sensory neurons present withing the olfactory organ consisting of olfactory epithelium. The cilia present in the epithelium recognizes the chemical present.
The neurons form connections of neuron to the olfactory bulb.
It is a mass of tissue that is round in shape that comprises of several kinds of cells of neurons that are capable to sense smell. It is necessary to sense smell properly.
Odorants are the compound that consist of an odor which get detected by the sensory neurons to carry out olfaction. They activate olfactory receptors and send signals to olfactory bulb.
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What is another chloride that could be used instead of the calcium chloride dihydrate to produce a solid precipitate with aqueous sodium carbonate?
cesium chloride is another chloride that could be used instead of the calcium chloride dihydrate to produce a solid precipitate with aqueous sodium carbonate
A mineral salt called cesium chloride (CsCl) is occasionally ingested or administered intravenously to cancer patients seeking alternative therapies. However, the FDA has not yet approved any cesium chloride products to treat cancer or other disorders.
In isopycnic centrifugation, cesium chloride is a common medical compound used to separate different forms of DNA. It is a reagent used in analytical chemistry to distinguish ions based on the hue and shape of the precipitate.
Cesium chloride is not proven to be effective in treating cancer. As an alternative to chemotherapy for cancer, cesium chloride is pushed. Supporters assert that cesium prevents tumor cells from proliferating by neutralizing the poisons they release.
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A quantity of an ideal gas is compressed to half its initial volume. the process may be adiabatic, isothermal or isobaric. the greatest amount of work is required if the process is?
the greatest amount of work is required if the process is adiabatic.The correct option is adiabatic.
The process in which heat is constant is called adiabatic process.
The The process in which temperature is constant is called isothermal process.
The process in which pressure is constant is called isobaric process.
The P-V diagram for adiabatic , isothermal and isobaric process is given below.
Work done in process = area encloses by P-V diagram axis . Since area under the curve is maximum for adiabatic process which is shown in the above diagram. So, work done by the gas will be maximum for adiabatic process.
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According to the iupac convention for chemical naming, which part of a hydrocarbon is selected as the main chain for a hydrocarbon chain?
Answer:
The longest continuous chain
Explanation:
Americium–241 decays into neptunium–237. which correctly describes this process of radioactive decay? an unstable nucleus decays into a more stable nucleus. energy in the nucleus is converted into mass. the strong nuclear force splits the nucleus apart. the atom loses four protons.
When Americium–241 decays into neptunium–237, an unstable nucleus decays into a more stable nucleus.
What is Radioactive decay?
Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay (α-decay), beta decay (β-decay), and gamma decay (γ-decay), all of which involve emitting one or more particles. The weak force is the mechanism that is responsible for beta decay, while the other two are governed by the electromagnetism and nuclear force. A fourth type of common decay is Electron Capture, in which an unstable nucleus captures an inner electron from one of the electron shells. The loss of that electron from the shell results in a cascade of electrons dropping down to that lower shell, resulting in emission of discrete X-rays from the transitions. A common example is Iodine-125 commonly used in medical settings.Radioactive decay is a stochastic (i.e. random) process at the level of single atoms. According to quantum theory, it is impossible to predict when a particular atom will decay, regardless of how long the atom has existed. However, for a significant number of identical atoms, the overall decay rate can be expressed as a decay constant or as half-life. The half-lives of radioactive atoms have a huge range; from nearly instantaneous to far longer than the age of the universe.The decaying nucleus is called the parent radionuclide (or parent radioisotope), and the process produces at least one daughter nuclide.Except for gamma decay or internal conversion from a nuclear excited state, the decay is a nuclear transmutation resulting in a daughter containing a different number of protons or neutrons (or both). When the number of protons changes, an atom of a different chemical element is created.To learn more about Radioactive decay: https://brainly.com/question/1770619
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The complex ion [cobr6]3− is a high-spin complex and absorbs light at a wavelength greater than 7. 70×102 nm. how many unpaired electrons will be present in the complex?
There are four unpaired electrons present in the complex ion [tex][CoBr_6]^3^-[/tex]
What is Crystal Field Theory (CFT)?CFT explains the breaking of orbital degeneracy in the transition metal complexes because of the presence of the ligands. It describes the strength of the metal-ligand bondsThere are two types of ligands - weak field ligands and strong field ligandsWeak field ligands form high spin complexes and strong field ligands form low spin complexesHigh spin complexes have more number of unpaired electrons Low spin complexes have less or zero unpaired electronsA complex ion [tex][CoBr_6]^3^-[/tex] is an octahedral complex. Co is the central atom to which 6 Br atoms are attached. Br is a weak field ligand and forms a high spin complex.
Electronic configuration of Co - [tex][Ar] 3d^7 4s^2[/tex]
Electronic configuration of [tex]Co^3^+ \rightarrow [Ar] 3d^6[/tex]
Electronic configuration of [tex][CoBr_6]^3^-\\[/tex] - [tex]t_2_g^4 e_g^2[/tex]
Hence, there are 4 unpaired electrons present in the complex ion [tex][CoBr_6]^3^-[/tex] .
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What two effects do impurities have on the melting point of an organic compound and why?
The two effects do impurities have on the melting point of an organic compound are given as ,
They tend to lower the overall melting point of the compound versus the value for he pure material .They ends to increase the range of the melting point values .The impurities decreases the melting point of the substance of organic compounds . This is because there are unwanted particles which weaken the lattice structure of the solids crystal due to which it become less stable and melts before its original melting point.
Example : Let take a clay and add dirt hen it breaks easily from the points where there is dirt . This is essentially what happens with impurities
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What is the order of reaction with respect to a and b for a reaction that obeys the rate law: rate = k[a]4[b]5?
The order of reaction with respect to a is 4 and with respect to b is 5 for a reaction that obeys the rate law.
The order of reaction is equal sum of power of concentration of the each reactant present in the reaction that obeys the rate law . The order of individual reactant or species present in the rate law is equal to the power of the of concentration of the respective species or reactant .
Example : If rate law is given as,
rate = k[tex][a]^{4} [b]^{5}[/tex]
The order of reaction with respect to a is 4 and with respect to b is 5 for a reaction that obeys the rate law.
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A pyranose with the hydroxyl group on the anomeric carbon pointing up in the haworth structure is designated?
A pyranose with the hydroxyl group on the anomeric carbon pointing up in the haworth structure is designated by alpha .
When aldohexoses undergo cyclization, anomers are formed. Anomers differ in the spatial position of the -OH group at [tex]C_{1}[/tex] . When the -OH group is positioned along the direction of [tex]-CH_{2} OH[/tex] , alpha anomer exists but when the -OH group is positioned opposite to the direction of the[tex]-CH_{2} OH[/tex] , then we have the beta anomer. Consider the alpha and beta anomers of galactopyranose and a pyranose with the hydroxyl group on the anomeric carbon pointing up in the haworth structure is given as ,
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Several salts of lead are only slightly soluble in water. these are pbcl2, pbi2, pbs and pbco3. which of these would be more soluble in acid solution compared with water?
PbCl2 is more soluble in acid as compared to other salts of lead.
Four salts of lead are more soluble in acid solution than water.
[tex]PbS[/tex] ⇒ [tex]Pb^{2+} + S^{2-}[/tex]
[tex]2H^{+} + S^{2-}[/tex] ⇒ [tex]H_{2}S[/tex]
As [tex]S^{2-}[/tex] ions are removed from the solution by the formation of [tex]H_{2} s[/tex], the solubility of [tex]PbS[/tex] increases in acid solution.
[tex]PbCo_{3}[/tex] ⇒ [tex]Pb^{2+} + Co_{3} ^{2-}[/tex]
[tex]2H^{2+} + Co_{3} ^{2-}[/tex] ⇒ [tex]H_{2} Co_{3}[/tex]
As [tex]Co_{3}[/tex] ions are removed from the solution by the formation of [tex]H_{2} Co_{3}[/tex], the solubility of [tex]PbCo_{3}[/tex] increases in acid solution.
[tex]PbCl_{2}[/tex] ⇒ [tex]Pb^{2+} + 2Cl^{-}[/tex]
[tex]2H^{+} + 2Cl^{-}[/tex] ⇒[tex]2HCl[/tex]
As [tex]Cl^{-}[/tex] ions are removed from the solution by the formation of HCl, the solubility of [tex]PbCl_{2}[/tex] increases in acid solution.
[tex]PbI_{2}[/tex] ⇒ [tex]Pb^{2+} + 2I^{-}[/tex]
[tex]2H^{+} + 2I^{-}[/tex] ⇒ [tex]2HI[/tex]
As [tex]I^{-}[/tex] are removed from the solution by the formation of [tex]HI[/tex], the solubility of [tex]PbI_{2}[/tex] increases in acid solution.
Thus from above we concluded that all the given salt of lead is more soluble in acid solution than in water.
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How many milliliters of 10. 5 m hcl(aq) are needed to prepare 225. 0 ml of 1. 00 m hcl(aq)?
There are 21.42 milliliters of a 10. 5 M HCl(aq) are needed to prepare 225. 0 ml of 1. 00 M HCl(aq)
Calculation,
The formula for the dilution of a solution is given as:
[tex]M_{1} V_{1} =M_{2} V_{2}[/tex]
Where M is molarity and V is the volume of the solution in liters ( L ).
Given data,
[tex]M_{1}[/tex] = 10. 5 M
[tex]V_{1}[/tex] = ?
[tex]M_{2}[/tex] = 1. 00 M
[tex]V_{2}[/tex] = 225. 0 ml
10. 5 M × [tex]V_{1}[/tex] = 1. 00 M×225. 0 ml
[tex]V_{1}[/tex] in milliliters = 1. 00 M×225. 0 ml / 10. 5 M = 21.42 ml
Volume in milliliters is 21.42 ml .
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How many coulombs passed through the solution if 11. 5 a of current was applied for 4. 00 h?
There are 165600 coulombs passed through the solution if 11. 5 A of current was applied for 4. 00 h.
Calculation,
Formula used :
Q = It
Where Q = charge passing through the solution = ?
I = current passed through the solution = 11. 5 A
and , t = time = 4. 00 h
Putting the value of current , and time
Q = 11. 5×4. 00 h =11. 5× 46×3600 A×s = 165600 coulombs
The SI unit of charge is coulombs.
The SI unit of current is ampere.
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What is the equilibrium expression for
2SO3(g) 0₂(g) +2SO₂(g)
Answer:
[tex]K_{c} =\frac{[O_{2} ] [SO_{2} ]^{2} }{[SO_{3} ]^{2} }[/tex]
Explanation:
To construct the equilibrium constant, you need the balanced equation:
2 SO₃(g) -----> O₂(g) + 2 SO₂(g)
The equilibrium constant compares the concentrations of the products and the reactants.
The given expression follows this structure:
aA(g) ----> bB(g) + cC(g)
In this equation, the uppercase letters symbolize the molecules and the lowercase letters symbolize their corresponding coefficients in the balanced equation.
The general equilibrium expression looks like this:
[tex]K_{c} =\frac{[B]^{b} [C]^{c} }{[A]^{a} }[/tex]
To be clear, the concentrations in the numerator represent the gaseous products and the concentrations in the denominator represent the gaseous reactants.
Therefore, the equilibrium expression for this equation is:
[tex]K_{c} =\frac{[O_{2} ] [SO_{2} ]^{2} }{[SO_{3} ]^{2} }[/tex]
Select the correct answer.
What is the mole ratio of Cl₂ to Br₂ in the given reaction?
Cl₂ + 2NaBr-2NaCl + Br₂
OA 1:1
OB. 1:2
OC. 2:3
O D. 2:1
Answer:
A.) 1:1
Explanation:
You can determine the mole ratio between substances by comparing their coefficients in the balanced equation. Both Cl₂ and Br₂ have coefficients of 1. Therefore, they have a 1 to 1 (1:1) relationship.
If you were comparing the mole ratio of Cl₂ and NaBr, they would have a 1:2 relationship because Cl₂ has a coefficient of 1 and NaBr has a coefficient of 2.
A radioactive isotope of potassium (K) has a half-life of 20 minutes. If a 255 gram sample of this isotope is allowed to decay for 80 minutes, how many grams of the radioactive isotope will remain? nd the O a. 8.0 0 b. 63.8 O c. 15.9 0 d 319
Answer:
15.94 g
Explanation:
80 mins is 4 half lives ( 20 min each)
255 * 1/2 * 1/2 * 1/2 * 1/2 = 255 * 1/2^4 = 15.94 g
When carbon bonds with oxygen, what is formed? when carbon bonds with oxygen, is formed.
The correct answer is Carbon Dioxide.
What are carbon bonds?Because each carbon is identical, they all contain four valence electrons, so they can easily bond with different carbon atoms to form extended chains or rings. A carbon atom can bond with another carbon atom two or three times to create double and triple covalent adhesives between two carbon atoms.The partial payments on the fluorine and carbon are beautiful, contributing to the unusual bond power of the carbon-fluorine bond. The bond is marked as "the strongest in organic chemistry," because fluorine forms the strongest single bond to carbon.In chemistry, a covalent bond is the strongest bond. In such bonding, every two atoms transfer electrons that bind them concurrently. For example, water molecules are bonded jointly where both hydrogen atoms and oxygen atoms transfer electrons to form a covalent bond.
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A 1. 7 m solution of the acid ha has a ph of 1. 0. what is the ka of the acid? the equation described by the ka value is ha(aq) h2o(l)⇌a−(aq) h3o (aq)
A 1. 7 m solution of the acid ha has a ph of 1. 0, then the ka of the acid is 6.25×10^(-3).
What is acid dissociation constant?The acid dissociation constant is defined as the value which is used to measure the strength of the specific acid in the solution.
Equation for general dissociation of strong or weak acid is
HA ----- (H+) + ( A-)
Ka can be expressed as
Ka = [H+] [A-]/[HA]
where [H+] is the concentration of H+ ions
Now, we will find the value of concentration of H+ ions
pH = -log [H+]
1 = -log[H+]
[H+] = antilog(-1)
[H+] = 0.1
By using ICE table, we find that the concentration of [HA] is
1.7-0.1
= 1.6
By substituting all the values we get,
Ka = 0.1 × 0.1/1.6
= 6.25×10^(-3)
Thus, we find that the Ka value of the given solution is 6.25×10^(-3).
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A sparingly soluble metal fluoride with formula mf2, where m is an unknown metal, has a ksp = 6. 65 x 10-6. calculate the concentration of f- in solution
A sparingly soluble metal fluoride with formula MF₂, where m is an unknown metal, has a Ksp = 6.65 x 10⁻⁶. The concentration of F⁻ in solution 2.36 x 10⁻³M
Ksp is called the Molar solubility product and S is the Molar solubility of an ion in a solution.
According to given formula, the dissociation of metal fluoride MF₂ occurs as follows in aqueous solution:
MF₂ ------> M⁺² + 2F⁻
S 2S
Ksp = [S] [2S]²
Ksp = 4S³
Given, Ksp = 6.65 x 10⁻⁶
On substituting,
6.65 x 10⁻⁶ = 4S³
S³ = 1.66 x 10⁻⁶
S = 1.18 x 10⁻³
So, Solubility of F⁻ ion = 2S
Solubility of F⁻ ion = 2(1.18 x 10⁻³)
Solubility of F⁻ ion = 2.36 x 10⁻³
Since Molarity of the ions is equal to the solubility of the ion in aqueous solution.
Hence, the concentration of F⁻ ion is 2.36 x 10⁻³M.
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As heat records across europe became toast, england topped what torturous temp for the first time?.
England topped what torturous temp for the first time of 40°C
For the first time ever, Britain experienced temperatures on Tuesday of over 40 degrees Celsius, or 104 degrees Fahrenheit, as a fierce heat wave moved northwest, causing raging wildfires, fatalities, and forced home evacuations throughout a Europe that was terrifyingly unprepared to deal with the new reality of extreme weather.
What is heat wave ?A heat wave is a period of very hot weather that may also be accompanied by significant humidity, especially in nations with maritime climates. While there are several definitions, a heat wave is typically assessed in relation to the local climate and the average temperatures for the time of year.
Heat waves begin when high pressure in the atmosphere moves in and pushes warm air toward the ground. That air warms up further as it is compressed, and we begin to feel a lot hotter.Learn more about Heat wave here:
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When an electron in a hydrogen atom jumps from an orbital farther from the nucleus to an orbital closer to the nucleus, it?
When an electron in a hydrogen atom jumps from an orbital farther from the nucleus to an orbital closer to the nucleus, the energy is emitted.
The energy of electron decreases. When it goes, the electron release a photon of electromagnetic energy.
When an electron jumps from higher energy orbital to lower energy orbital, the difference in the energies of these two orbitals is radiated as quantum.
E = hc/wavelength
The photon is emitted with the electron moving from higher energy level to lower energy level.
The wavelength of emitted radiation would be (27/32) × wavelength.
Thus we concluded that the energy of photon is exact energy that is lost by the electron moving to its lower energy level.
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HELP PLS I WILL MARK U BRAINLIEST!
Answer: Calcium Hydroxide
Explanation:
CaOH will as it is the only base, the rest is acid
If 24. 7 g of barium chloride reacts with excess sodium sulfate, how many grams of sodium chloride will be produced
6.9 g of sodium chloride will be produced.
Antoine Lavoisier discovered in 1789 that mass is neither created nor destroyed in chemical reactions, which led to the formulation of the Law of Conservation of Mass. That is to say, the mass of any one element at the start of a reaction will be equal to that element's mass at the conclusion of the reaction.
The total mass of the reactants and products are equal under the principle of conservation of mass.
BaCl₂ + Na₂SO₄ => BaSO₄ + 2NaCl
Molecular weight of BaCl₂ = 137 + 35.5 × 2
= 208 g/mole
Molecular weight of NaCl = 22.99 + 35.45
= 58.44 g/mole
208 g/mol BaCl₂ produces 58.44 g/mole NaCl.
1 g/mol BaCl₂ produces (58.44 / 208) g/mole NaCl.
24.7 g BaCl₂ produces (58.44 / 208) × 24.7 g NaCl
= 6.9 g NaCl
Therefore, 6.9g of sodium chloride will be produced.
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Explain why a glucose test strip may be used to determine the enzymatic activity of lactase
The glucose test strip may be used in the determination of the enzymatic activity of lactase
Since measuring the amount of generated glucose shows that the enzymes are actually converting the disaccharide into galactose and glucose, the glucose test strip can be used to determine the enzymatic activity of lactase.
As a byproduct of lactase hydrolysis, glucose serves as a direct indicator of the amount of lactase that has been reacted. Utilizing test strips that gauge the amount of glucose present in the reaction mixture, you can keep an eye on the enzyme activity.
An artificial substrate for lactase is hydrolyzed to extract lactase from dietary supplement tablets, which is then measured using a colorimetric assay (ortho-nitrophenol-beta-D-galactopyranoside, ONPG)
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What is the maximum number of moles of so3 that can be produced by the reaction of 2. 0 mol of s with of o2?
The maximum number of moles of SO₃ that can be produced by the reaction of 2.0 mol of S with of O₂ will be 2, two moles.
What are moles?Moles are the quantity of a material in per unit of solution. It is the SI unit of amount of a substance. The moles can be calculated by dividing the molecular weight of an object with the molecular mass of the substance.
The balanced reaction is
2SO₂ +O₂ →2SO₃
The ratio is 2:1
So if 2.0 mol of sulfur will reaction with 1 mole of oxygen there will be 2 moles of SO₃. The reaction clears the moles of SO₃ in the reaction.
Thus, maximum number of moles of SO₃ will be 2.
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What would the volume of 40g of butane be under a pressure of 1000 Torr and a temperature of 18°C?
From the calculation, the volume of the gas is 12.6 L
What is the pressure of the gas?We can define the pressure of a gas as the force that the gas exerts per unit area of the container. Now we knw that we can be able to obtain the volume of the gas by the use of the ideal gas equation.
Now;
Number of moles = 40g/58 g/mol = 0.69 moles
1 mole of butane occupies 22.4 L
0.69 moles of butane occupies 0.69 moles * 22.4 L/ 1mole
= 15.5 L
Now;
P1 =760 Torr
V1 = 15.5 L
T1 = 273 K
P2 = 1000 Torr
V2 = ?
T2 = 18°C + 273 = 291 K
P1V1/T1 = P2V2/T2
P1V1T2 = P2V2T1
V2 = P1V1T2/P2T1
V2 = 760 Torr * 15.5 L * 291 K/1000 Torr * 273 K
V2 =12.6 L
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Draw the most stable form of the major product of each of the molecules with excess naoch2ch3 in ch3ch2oh , followed by aqueous acidic workup.
The most stable form of naoch2ch3 in ch3ch2oh.
What is aqueous acidic?When disbanded in an aqueous resolution, certain ions were removed from the explanation. An Arrhenius acid is a combination that increases the attention of H+ ions that are current when counted to water. These H+ ions include the hydronium ion (H3O+) when they incorporate with water molecules.The pH of an aqueous solution is the measurement of how acidic or basic it is. The pH of an aqueous solution can be defined and calculated by using the attention of the hydronium ion concentration in the solution.Some samples of aqueous resolutions etc.Some examples of explanations that are not aqueous solutions include any liquid that does not include water.
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A mixture of h2po4- and oh- is allowed to react. what are the products of the reaction?
When mixture of H2PO4- and OH- is allowed to react. The products of the reaction are as follow
H2PO4+ OH--------HPO4(2-)+H2O
In the reaction above H2PO4(2-) is donating the proton to OH Resulting in H2O and the deprotonated species. This makes it a bronsted lowry acid.
According to Bronsted lowry, acid are those which donate proton.
In the given problem, H2PO4- is bronsted lowry acid. So it donate electron to OH- to form water.
Thus, the product formed in the given reaction is water and H2PO4(2-).
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When an allergen binds with ige antibodies on mast cells, resulting in release of chemical mediators, this reaction is called:_________
When an allergen binds with IgE antibodies on mast cells, resulting in release of chemical mediators, this reaction is called Type I reactions.
The Type I reactions is also known as immediate hypersensitivity reaction.
This reaction involve immunoglobulin E ( IgE ) - mediated release of histamine and other mediators from mast cells and basophils .
Examples : anaphylaxis and allergic rhinoconjunctivitis.
The IgE molecules bind to high - affinity receptors on the surface of mast cells and basophils and the subsequently cross-linking of these molecules with the allergen releases performed and newly synthesized mediators.
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