JEE Main 2012 — Chemical Kinetics Question with Solution
JEE Main 2012 (Offline)
Question
For a first order reaction, products, the concentration of changes from to in minutes. The rate of reaction when the concentration of is is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
$\begin{aligned}
& \mathrm{k}=\frac{2.303}{40} \log \frac{0.1}{0.025} \\
& \mathrm{k}=\frac{0.693}{20}
\end{aligned}$
For a F.O.R., rate ;
rate .
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This is a previous-year question from JEE Main 2012, covering the Chemical Kinetics chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.