ABC26PH0342 · Concentration B B
Subject: Physical Chemistry · Chapter: Concentration B B · Topic: Concentration B B – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Medium
The reaction, $2\mathrm{NO(g)}+\mathrm{O_2(g)} \rightarrow 2\mathrm{NO_2(g)}$ proceeds via the following steps \[ \begin{array}{l} \mathrm{NO}+\mathrm{NO} \xrightarrow{\mathrm{k_a}} \mathrm{N_2O_2} \\ \mathrm{N_2O_2} \xrightarrow{\mathrm{k_a'}} \mathrm{NO}+\mathrm{NO} \\ \mathrm{N_2O_2}+\mathrm{O_2} \xrightarrow{\mathrm{k_b}} \mathrm{NO_2}+\mathrm{NO_2} \end{array} \]
The rate of this reaction is equal to (a)$2 \mathrm{k}_{\mathrm{b}}[\mathrm{NO}]\left[\mathrm{O}_{2}\right]$
(b)$\left(2 \mathrm{k}_{\mathrm{a}} \mathrm{k}_{\mathrm{b}}[\mathrm{NO}]^{2}\left[\mathrm{O}_{2}\right]\right) /\left(\mathrm{k}_{\mathrm{a}}+\mathrm{k}_{\mathrm{b}}\left[\mathrm{O}_{2}\right]\right)$
(c)$2 \mathrm{k}_{\mathrm{b}}[\mathrm{NO}]^{2}\left[\mathrm{O}_{2}\right]$
(d)$\mathrm{k}_{\mathrm{a}}[\mathrm{NO}]^{2}\left[\mathrm{O}_{2}\right]$
Answer
Explanation
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