Question

HA is a weak acid. Which equilibrium corresponds to the equilibrium constant \( K_{b} \) for \( A^{-} \)? Select one: A. \( \mathrm{HA}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \rightleftharpoons \mathrm{H}_{2} \mathrm{O}(\mathrm{l})+\mathrm{H}^{+}(\mathrm{aq}) \) B. \( \mathrm{A}^{-}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightleftharpoons \mathrm{HA}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \) C. \( \mathrm{A}^{-}(\mathrm{aq})+\mathrm{H}_{3} \mathrm{O}^{+}(\mathrm{aq}) \rightleftharpoons \mathrm{HA}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \) D. \( \mathrm{HA}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightleftharpoons \mathrm{H}_{2} \mathrm{~A}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \) E. \( \mathrm{A}^{-}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \rightleftharpoons \mathrm{HOA}^{2-}(\mathrm{aq}) \)

          HA is a weak acid. Which equilibrium corresponds to the equilibrium constant \( K_{b} \) for \( A^{-} \)?

Select one:
A. \( \mathrm{HA}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \rightleftharpoons \mathrm{H}_{2} \mathrm{O}(\mathrm{l})+\mathrm{H}^{+}(\mathrm{aq}) \)
B. \( \mathrm{A}^{-}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightleftharpoons \mathrm{HA}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \)
C. \( \mathrm{A}^{-}(\mathrm{aq})+\mathrm{H}_{3} \mathrm{O}^{+}(\mathrm{aq}) \rightleftharpoons \mathrm{HA}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \)
D. \( \mathrm{HA}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightleftharpoons \mathrm{H}_{2} \mathrm{~A}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \)
E. \( \mathrm{A}^{-}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \rightleftharpoons \mathrm{HOA}^{2-}(\mathrm{aq}) \)

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

Select one:
A. HA(aq)+OH^-(aq) ⇌H2O(l)+H^+(aq)
B. A^-(aq)+H2O(l) ⇌HA(aq)+OH^-(aq)
C. A^-(aq)+H3O^+(aq) ⇌HA(aq)+H2O(l)
D. HA(aq)+H2O(l) ⇌H2 A^+(aq)+OH^-(aq)
E. A^-(aq)+OH^-(aq) ⇌HOA^2-(aq)

Added by Abbey L.

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