question_answer

Consider the reaction :\[C{{l}_{2}}(aq)+{{H}_{2}}S(aq)\xrightarrow{{}}\]\[S(s)+2{{H}^{+}}(aq)+2C{{l}^{-}}(aq)\] The rate equation for this reaction is , rate \[=k[C{{l}_{2}}]\,[{{H}_{2}}S]\] Which of these mechanisms is consistent with this rate equation? A. \[C{{l}_{2}}+{{H}_{2}}S\to {{H}^{+}}+C{{l}^{-}}+C{{l}^{+}}+H{{S}^{-}}\](slow) \[C{{l}^{+}}+H{{S}^{-}}\to {{H}^{+}}+C{{l}^{-}}+S\](fast) B. \[{{H}_{2}}S\rightleftharpoons {{H}^{+}}+H{{S}^{-}}\] (fast equilibrium); \[C{{l}_{2}}+H{{S}^{-}}\to 2C{{l}^{-}}+{{H}^{+}}+S\](slow)

A)  Neither A nor B               

B)  A only

C)  B only                  

D)  Both A and B