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JIPMER 2007
Exam
JIPMER
Year
2007
Subject
Chemistry
Chapter
Chemical Kinetics

JIPMER 2007 · Chemistry · Chemical Kinetics

The rate of reaction between two reactants A and B decreases by a...

The rate of reaction between two reactants AA and BB decreases by a factor of 4 , if the concentration of reactant BB is doubled. The order of this reaction with respect to reactant BB is

Options

  1. A−1-1
  2. B−2-2
  3. C1
  4. D2

Correct answer

B. −2-2

Step-by-step solution

A+B⟶A+B \longrightarrow Product Rate ∝[A][B]−2...(i)\propto[A][B]^{-2}...(i) The rate decreases by factor 4 if the concentration of reactant ' BB ' is doubled. So, Rate ∝[A][2B]−2\propto[A][2 B]^{-2} ∝[A][B]−24...(ii)\propto \frac{[A][B]^{-2}}{4}...(ii) Hence, order of reaction wrt reactant BB is -2
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