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JEE Advanced 2007Paper 2
Exam
JEE Advanced
Year
2007
Paper
Paper 2
Subject
Chemistry
Chapter
Chemical Kinetics

JEE Advanced 2007 · Paper 2 · Chemistry · Chemical Kinetics

Consider a reaction a G+b H arrow products. When concentration of...

Consider a reaction aG+bH→a G+b H \rightarrow products. When concentration of both the reactants GG and HH is doubled, the rate increases by eight times. However, when concentration of GG is doubled keeping the concentration of HH fixed, the rate is doubled. The overall order of the reaction is

Options

  1. A0
  2. B1
  3. C2
  4. D3

Correct answer

D. 3

Step-by-step solution

a G+b H \longrightarrowProductSupposeorderofreactionProduct Suppose order of reaction=nWhenconcentrationofbothWhen concentration of bothG and Hisdoublethanrateincreasebyeighttimes.is double than rate increase by eight times. rate =k( reactants )n(2)8=k(2)n(2)3=k(2)nn=3\begin{aligned}\text{ rate }& =k(\text{ reactants })^n \\ (2)^8 & =k(2)^n \\ (2)^3 & =k(2)^n \\ n & =3 \end{aligned}whenconcentrationwhen concentration of Gisdoubledthanconcentrationis doubled than concentrationHisfixed,therateisdouble.thanis fixed, the rate is double. than\quadraterate\propto[G]^1[H]^2$
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