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MHT CET 202624 AprilEvening Shift
Exam
MHT CET
Year
2026
Date
24 April
Shift
Evening Shift
Subject
Chemistry
Chapter
Chemical Kinetics

MHT CET 2026 · 24 April · Evening Shift · Chemistry · Chemical Kinetics

What is the order of reaction for the following? 2H_2O_2(l) arrow...

What is the order of reaction for the following?
2H2O2(l)→2H2O(l)+O2(g)2\text{H}_2\text{O}_2(l) \rightarrow 2\text{H}_2\text{O}(l) + \text{O}_2(g)

Options

  1. AZero
  2. BFirst
  3. CSecond
  4. DThird

Correct answer

B. First

Step-by-step solution

The decomposition of hydrogen peroxide is a well-known example of a first-order reaction.

The rate law for this reaction is given by:

Rate=k[H2O2]\text{Rate} = k[\text{H}_2\text{O}_2]

Since the power of the concentration term in the rate law is 11, the order of the reaction is first.

Answer: First
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