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MHT CET · Chemistry · Chemical Kinetics

The rate law for the reaction \(2 \mathrm{NO}_{(\mathrm{g})}+\mathrm{O}_{2(\mathrm{~g})} \longrightarrow 2 \mathrm{NO}_{2(\mathrm{~g})}\) is
rate \(=\mathrm{k}[\mathrm{NO}]^{2}\left[\mathrm{O}_{2}\right]\), then which among the following statement is correct?

  1. A The reaction is first order in \(\mathrm{O}_{2}\), first order in NO and second order overall.
  2. B The reaction is second order in NO, zero order in \(\mathrm{O}_{2}\) and second order overall.
  3. C The reaction is second order in \(\mathrm{NO}\), first order in \(\mathrm{O}_{2}\) and third order overall.
  4. D The reaction is zero order overall.
Verified Solution

Answer & Solution

Correct Answer

(C) The reaction is second order in \(\mathrm{NO}\), first order in \(\mathrm{O}_{2}\) and third order overall.

Step-by-step Solution

Detailed explanation

Rate \(=k[\mathrm{NO}]^{2}\left[\mathrm{O}_{2}\right]\)
Here, \(x=2, y=1\)
Overall order of reaction \(=x+y=3\)
From MHT CET
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