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The following mechanism has been proposed for the reaction of NO with Br2 to form NOBr: NO(g) + Br2(g) ⇌ NOBr2(g) NOBr2(g) + NO(g) → 2NOBr(g) If the second step is the rate determining step, the order of the reaction with respect to NO(g) is
- 1
- 0
- 3
- 2
Correct answer: 2
Solution
The rate determining step involves the reaction of NOBr2 with NO, which indicates that the rate depends on the concentration of NO in this step. Since there are two moles of NO involved in the formation of products, the reaction is second order with respect to NO.
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