When acetic acid donates a proton to the hydrosulfide ion in aqueous solution

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

Problem

When acetic acid CH3COOH\mathrm{CH_3COOH} donates a proton to the hydrosulfide ion HS−\mathrm{HS^-} in aqueous solution, which net ionic equation is correct? (a) CH3COOH(aq)+H2S(aq)⇌CH3COO−(aq)+HS−(aq)\mathrm{CH_3COOH(aq) + H_2S(aq) \rightleftharpoons CH_3COO^-(aq) + HS^-(aq)} (b) CH3COO−(aq)+HS−(aq)⇌CH3COOH(aq)+S2−(aq)\mathrm{CH_3COO^-(aq) + HS^-(aq) \rightleftharpoons CH_3COOH(aq) + S^{2-}(aq)} (c) CH3COOH(aq)+HS−(aq)⇌CH3COO−(aq)+H2S(aq)\mathrm{CH_3COOH(aq) + HS^-(aq) \rightleftharpoons CH_3COO^-(aq) + H_2S(aq)} (d) CH3COOH(aq)+HS−(aq)⇌CH3COO−(aq)+H+(aq)+S2−(aq)\mathrm{CH_3COOH(aq) + HS^-(aq) \rightleftharpoons CH_3COO^-(aq) + H^+(aq) + S^{2-}(aq)}

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