JEE Main 2007 — Chemical Kinetics Question with Solution
JEE Main 2007
Question
Consider the reaction,
Products
When concentration of alone was doubled, the half-life did not change. When the concentration of alone was doubled, the rate increased by two times. The unit of rate constant for this reaction is
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Product
When conc. of is doubled, the half life did not change, hence reaction is of first order w.r.t. .
When concentration of is doubled, reaction rate is doubled, hence reaction is of first order w.r.t. .
Hence over all order of reaction is
So, unit of rate constant .
Hence, (A) is correct.
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This is a previous-year question from JEE Main 2007, 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.