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Pseudo First Order Reaction - Practice Questions & MCQ
Edited By admin | Updated on Sep 18, 2023 18:35 AM | #JEE Main
Quick Facts
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8 Questions around this concept.
Solve by difficulty
Rate of reaction, . If B is taken in large excess, then the order of reaction is:
The value of rate constant of a pseudo first order reaction ____________.
Which of the following is true for pseudo - first-order reaction :
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Concepts Covered - 1
Pseudo Order Reaction
If one reactant is present in large excess a 2nd order reaction is converted to 1st order reaction. This is called a pseudo-first-order reaction.
acid catalyzed hydrolysis of ester
$\mathrm{C}_3 \mathrm{H}_6 \mathrm{O}_2+\mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{CH}_3 \mathrm{COOH}+\mathrm{CH}_3 \mathrm{OH}$
This reaction is first order with respect to ester. The 2nd-order reaction with respect to that reactant has been taken in more amounts. For example:
$\begin{aligned} & r=k\left[\mathrm{CH}_3 \mathrm{CO}_2 \mathrm{CH}_3\right]\left[\mathrm{H}_2 \mathrm{O}\right]=k^{\prime}\left[\mathrm{CH}_3 \mathrm{CO}_2 \mathrm{CH}_3\right] \\ & k\left[\mathrm{H}_2 \mathrm{O}\right]=k^{\prime}\end{aligned}$
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