Chemistry · 2025
JEE Main · 29 January 2025, Shift 1 · Q58
The reaction A_2+ B_2 → 2 AB follows the mechanism A_2 [k_-1] k_1 A+A (fast); A+B_2 → k_2 A B+B (slow); A+B → A B (fast) The overall order of the…
The reaction $\displaystyle \mathrm{A}_2+\mathrm{B}_2 \rightarrow 2 \mathrm{AB}$ follows the mechanism
$$\begin{aligned}
& A_2 \xrightleftharpoons[k_{-1}]{k_1} A+A \text { (fast) } \\
& A+B_2 \xrightarrow{k_2} A B+B \text { (slow) } \\
& A+B \rightarrow A B \text { (fast) }
\end{aligned}
$$
The overall order of the reaction is :
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 1.5$
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JEE Main 2025 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.