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HA Is a Weak Acid

Question 40

Multiple Choice

HA is a weak acid.Which equilibrium corresponds to the equilibrium constant Kb for A-?


A) HA (aq) + H2O (l) HA is a weak acid.Which equilibrium corresponds to the equilibrium constant K<sub>b</sub> for A<sup>-</sup>? A) HA (aq) + H<sub>2</sub>O (l) H<sub>2</sub>A<sup>+</sup> (aq) + OH<sup>-</sup>(aq) B) A<sup>-</sup> (aq) + H<sub>3</sub>O<sup>+</sup> (aq) HA (aq) + H<sub>2</sub>O (l) C) HA (aq) + OH<sup>-</sup> (aq) H<sub>2</sub>O (l) + H<sup>+</sup> (aq) D) A<sup>-</sup> (aq) + H<sub>2</sub>O (l) HA (aq) + OH<sup>-</sup> (aq) E) A<sup>-</sup> (aq) + OH<sup>-</sup> (aq) HOA<sup>2-</sup> (aq) H2A+ (aq) + OH-(aq)
B) A- (aq) + H3O+ (aq) HA is a weak acid.Which equilibrium corresponds to the equilibrium constant K<sub>b</sub> for A<sup>-</sup>? A) HA (aq) + H<sub>2</sub>O (l) H<sub>2</sub>A<sup>+</sup> (aq) + OH<sup>-</sup>(aq) B) A<sup>-</sup> (aq) + H<sub>3</sub>O<sup>+</sup> (aq) HA (aq) + H<sub>2</sub>O (l) C) HA (aq) + OH<sup>-</sup> (aq) H<sub>2</sub>O (l) + H<sup>+</sup> (aq) D) A<sup>-</sup> (aq) + H<sub>2</sub>O (l) HA (aq) + OH<sup>-</sup> (aq) E) A<sup>-</sup> (aq) + OH<sup>-</sup> (aq) HOA<sup>2-</sup> (aq) HA (aq) + H2O (l)
C) HA (aq) + OH- (aq) HA is a weak acid.Which equilibrium corresponds to the equilibrium constant K<sub>b</sub> for A<sup>-</sup>? A) HA (aq) + H<sub>2</sub>O (l) H<sub>2</sub>A<sup>+</sup> (aq) + OH<sup>-</sup>(aq) B) A<sup>-</sup> (aq) + H<sub>3</sub>O<sup>+</sup> (aq) HA (aq) + H<sub>2</sub>O (l) C) HA (aq) + OH<sup>-</sup> (aq) H<sub>2</sub>O (l) + H<sup>+</sup> (aq) D) A<sup>-</sup> (aq) + H<sub>2</sub>O (l) HA (aq) + OH<sup>-</sup> (aq) E) A<sup>-</sup> (aq) + OH<sup>-</sup> (aq) HOA<sup>2-</sup> (aq) H2O (l) + H+ (aq)
D) A- (aq) + H2O (l) HA is a weak acid.Which equilibrium corresponds to the equilibrium constant K<sub>b</sub> for A<sup>-</sup>? A) HA (aq) + H<sub>2</sub>O (l) H<sub>2</sub>A<sup>+</sup> (aq) + OH<sup>-</sup>(aq) B) A<sup>-</sup> (aq) + H<sub>3</sub>O<sup>+</sup> (aq) HA (aq) + H<sub>2</sub>O (l) C) HA (aq) + OH<sup>-</sup> (aq) H<sub>2</sub>O (l) + H<sup>+</sup> (aq) D) A<sup>-</sup> (aq) + H<sub>2</sub>O (l) HA (aq) + OH<sup>-</sup> (aq) E) A<sup>-</sup> (aq) + OH<sup>-</sup> (aq) HOA<sup>2-</sup> (aq) HA (aq) + OH- (aq)
E) A- (aq) + OH- (aq) HA is a weak acid.Which equilibrium corresponds to the equilibrium constant K<sub>b</sub> for A<sup>-</sup>? A) HA (aq) + H<sub>2</sub>O (l) H<sub>2</sub>A<sup>+</sup> (aq) + OH<sup>-</sup>(aq) B) A<sup>-</sup> (aq) + H<sub>3</sub>O<sup>+</sup> (aq) HA (aq) + H<sub>2</sub>O (l) C) HA (aq) + OH<sup>-</sup> (aq) H<sub>2</sub>O (l) + H<sup>+</sup> (aq) D) A<sup>-</sup> (aq) + H<sub>2</sub>O (l) HA (aq) + OH<sup>-</sup> (aq) E) A<sup>-</sup> (aq) + OH<sup>-</sup> (aq) HOA<sup>2-</sup> (aq) HOA2- (aq)

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