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NEET 2009
Exam
NEET
Year
2009
Subject
Chemistry
Chapter
Chemical Kinetics

NEET 2009 · Chemistry · Chemical Kinetics

For the reaction A+B arrow products, it is observed that : A. On...

For the reaction A+B→\mathrm{A}+\mathrm{B} \rightarrow products, it is observed that : A. On doubling the initial concentration of AA only, the rate of reaction is also doubled and B. On doubling the initial concentration of both AA and BB, there is a change by a factor of 8 in the rate of the reaction. The rate of this reaction is given by :

Options

  1. Arate =k[A][B]=k[A][B]
  2. Brate =k[A]2[B]=k[A]^2[B]
  3. Crate =k[A][B]2=k[A][B]^2
  4. Drate =k[A]2[ B]2=\mathrm{k}[\mathrm{A}]^2[\mathrm{~B}]^2

Correct answer

C. rate =k[A][B]2=k[A][B]^2

Step-by-step solution

 Rate =k[A][B]2=k[2A][2B]2=k×8[A][B]2\begin{aligned}\text{ Rate }& =\mathrm{k}[\mathrm{A}][\mathrm{B}]^2 \\ & =\mathrm{k}[2 \mathrm{ A}][2 \mathrm{ B}]^2 \\ & =\mathrm{k} \times8[\mathrm{ A}][\mathrm{B}]^2 \end{aligned}
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