For a reaction, 2 NO +2 H _ 2 ~N _ 2 +2 H _ 2 O the possible mechanism is 2 NO ~N _ 2 O _…

Chemistry · JEE Main · NTA ExamsChemical Kinetics

For a reaction, \(2 \mathrm{NO}+2 \mathrm{H}_{2} \rightarrow \mathrm{~N}_{2}+2 \mathrm{H}_{2} \mathrm{O}\) the possible mechanism is
\(2 \mathrm{NO} \rightleftharpoons \mathrm{~N}_{2} \mathrm{O}_{2}\) 
\(\mathrm{N}_{2} \mathrm{O}_{2}+\mathrm{H}_{2} \xrightarrow{\text { slow }} \mathrm{N}_{2} \mathrm{O}+\mathrm{H}_{2} \mathrm{O}\) 
\(\mathrm{N}_{2} \mathrm{O}+\mathrm{H}_{2} \mathrm{O} \xrightarrow{\text { fast }} \mathrm{N}_{2}+\mathrm{H}_{2} \mathrm{O}\) 
What is the rate law and order of the reaction ?
  1. Rate = k [N2O2], order = 1
  2. Rate = k [N2O2] [H2], order = 2
  3. Rate = k [N2O2]2, order = 2
  4. Rate = k [N2O2]2 [H2], order = 3

Answer

(B) Rate = k [N 2 O 2 ] [H 2 ], order = 2

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