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AIIMS 2012
Exam
AIIMS
Year
2012
Subject
Chemistry
Chapter
Chemical Kinetics

AIIMS 2012 · Chemistry · Chemical Kinetics

If t_ 1/2 v (1)/(a^2) is a straight line graph then determine the...

If t1/2v1a2t_{1/2} v \frac{1}{a^2} is a straight line graph then determine the order of reaction.

Options

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

Correct answer

D. Third order

Step-by-step solution

For a nth n^{\text{th }} order reaction, t1/2∝1[a]n−1t1/2∝1[a]3−1[∴n=3]t1/2∝1[a]2t_{1/2} \propto \frac{1}{[a]^{n-1}} t_{1/2} \propto \frac{1}{[a]^{3-1}} \quad[\therefore n=3] t_{1/2} \propto \frac{1}{[a]^2}
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