NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

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Analyzing +4 | -1

Consider the reaction,

C{l_2}\left( {aq} \right) + {H_2}S\left( {aq} \right) \to S\left( s \right) + 2{H^ + }\left( {aq} \right) + 2C{l^ - }\left( {aq} \right)

the rate equation for this reaction is ,

rate = k\left[ {C{l_2}} \right]\left[ {{H_2}S} \right]

Which of these mechanisms is/are consistent with this rate equation?

\begin{array}{l} A.\;\;C{l_2} + {H_2}S\left( {aq} \right) \to {H^ + }C{l^ - } + C{l^ + } + H{S^ - }\left( {slow} \right)\\ \;\;\;\;\;C{l^ + } + H{S^ - } \to {H^ + }C{l^ - } + S\left( {fast} \right)\\ B.\;\;{H_2}S \leftrightarrow {H^ + } + H{S^ - }\left( {fast\;equilibrium} \right)\\ \;\;\;\;C{l_2} + H{S^ - } \to 2C{l^ - } + {H^ + }S\left( {slow} \right) \end{array}

View answer and explanation

Correct option: D

(A)Only

Option D (All of the above) is correct because all the statements about the rate constants and equilibrium constant are derived correctly from the given net rate equation.

NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

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