NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

1 Hard

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Understanding +4 | -1

For an elementary chemical reaction,

{A_2}\underset{{{k_{ - 1}}}}{\overset{{{k_1}}}{\leftrightharpoons}}2A

, the expression for

\frac{{d\left[ A \right]}}{{dt}}

View answer and explanation

Correct option: C

2{k_1}\left[ {{A_2}} \right] - 2{k_{ - 1}}{\left[ A \right]^2}

Option A (

2{k_1}\left[ {{A_2}} \right] - {k_{ - 1}}{{\left[ A \right]}^2}

) is incorrect. The correct expression accounts for the stoichiometry of the reaction, which affects the rate constants.

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