Concept explainers
(a)
Interpretation:
The reaction for NH3 acting as a base in water and Kb equilibrium expression should be written.
Concept Introduction :
The equilibrium constant expression is the ratio of the concentration of products and reactants of a reaction at equilibrium. The concentrations are raised to the power equal to the
(b)
Interpretation:
The reaction for CN- acting as a base in water and Kb equilibrium expression should be written.
Concept Introduction :
The equilibrium constant expression is the ratio of the concentration of products and reactants of a reaction at equilibrium. The concentrations are raised to the power equal to the stoichiometric coefficient in the balanced equation.
(c)
Interpretation:
The reaction for pyridine acting as a base in water and Kb equilibrium expression should be written.
Concept Introduction :
The equilibrium constant expression is the ratio of the concentration of products and reactants of a reaction at equilibrium. The concentrations are raised to the power equal to the stoichiometric coefficient in the balanced equation.
(d)
Interpretation:
The reaction for aniline acting as a base in water and Kb equilibrium expression should be written.
Concept Introduction :
The equilibrium constant expression is the ratio of the concentration of products and reactants of a reaction at equilibrium. The concentrations are raised to the power equal to the stoichiometric coefficient in the balanced equation.
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EBK CHEMICAL PRINCIPLES
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- Prove that Ka3 Kb1 = Kw for phosphoric acid, H3PO4, by adding the chemical equilibrium expressions that corresponds to the third ionization step of the acid in water with the first of the three successive steps of the reaction of phosphate ion, PO43, with water.arrow_forwardWrite the dissociation reaction and the corresponding Ka equilibrium expression for each of the following acids in water. a. HCN b. HOC6H5 c. C6H5NH3+arrow_forwardConsider the following statements. Write out an example reaction and K expression that is associated with each statement. a. The autoionization of water. b. An acid reacts with water to produce the conjugate base of the acid and the hydronium ion. c. A base reacts with water to produce the conjugate acid of the base and the hydroxide ion.arrow_forward
- Ionization of the first proton from H2SO4 is complete (H2SO4 is a strong acid); the acid-ionization constant for the second proton is 1.1 102. a What would be the approximate hydronium-ion concentration in 0.100 M H2SO4 if ionization of the second proton were ignored? b The ionization of the second proton must be considered for a more exact answer, however. Calculate the hydronium-ion concentration in 0.100 M H2SO4, accounting for the ionization of both protons.arrow_forwardIonization of the first proton from H2SeO4 is complete (H2SeO4 is a strong acid); the acid-ionization constant for the second proton is 1.2 102. a What would be the approximate hydronium-ion concentration in 0.150 M H2SeO4 if ionization of the second proton were ignored? b The ionization of the second proton must be considered for a more exact answer, however. Calculate the hydronium-ion concentration in 0.150 M H2SeO4, accounting for the ionization of both protons.arrow_forward. How is the strength of an acid related to the fact that a competition for protons exists in aqueous solution between water molecules and the anion of the acid?arrow_forward
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