Question

15) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant $K_b$ for A$^-$? A) A$^-$ (aq) + OH$^-$ (aq) $ ightleftharpoons$ HOA$^{2-}$ (aq) B) HA (aq) + OH$^-$ (aq) $ ightleftharpoons$ H$_2$O (l) + H$^+$ (aq) C) A$^-$ (aq) + H$_2$O (l) $ ightleftharpoons$ HA (aq) + OH$^-$ (aq) D) A$^-$ (aq) + H$_3$O$^+$ (aq) $ ightleftharpoons$ HA (aq) + H$_2$O (l) E) HA (aq) + H$_2$O (l) $ ightleftharpoons$ H$_2$A$^+$ (aq) + OH$^-$ (aq)

          15) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant $K_b$ for A$^-$?
A) A$^-$ (aq) + OH$^-$ (aq) $
ightleftharpoons$ HOA$^{2-}$ (aq)
B) HA (aq) + OH$^-$ (aq) $
ightleftharpoons$ H$_2$O (l) + H$^+$ (aq)
C) A$^-$ (aq) + H$_2$O (l) $
ightleftharpoons$ HA (aq) + OH$^-$ (aq)
D) A$^-$ (aq) + H$_3$O$^+$ (aq) $
ightleftharpoons$ HA (aq) + H$_2$O (l)
E) HA (aq) + H$_2$O (l) $
ightleftharpoons$ H$_2$A$^+$ (aq) + OH$^-$ (aq)

15) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kb for A^-?
A) A^- (aq) + OH^- (aq) ightleftharpoons HOA^2- (aq)
B) HA (aq) + OH^- (aq) ightleftharpoons H2O (l) + H^+ (aq)
C) A^- (aq) + H2O (l) ightleftharpoons HA (aq) + OH^- (aq)
D) A^- (aq) + H3O^+ (aq) ightleftharpoons HA (aq) + H2O (l)
E) HA (aq) + H2O (l) ightleftharpoons H2A^+ (aq) + OH^- (aq)

Added by Ver-Nica C.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Ronald Prasad

03/21/2022

Step 1

Step 1: Identify the weak acid HA and its conjugate base A- in the equilibrium equation. Show more…

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15) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kb for A-? A) A- (aq) + OH- (aq) ℀ HOA2- (aq) B) HA (aq) + OH- (aq) ℀ H2O (l) + H+ (aq) C) A- (aq) + H2O (l) ℀ HA (aq) + OH- (aq) D) A- (aq) + H3O+ (aq) ℀ HA (aq) + H2O (l) E) HA (aq) + H2O (l) ℀ H2A+ (aq) + OH-(aq)