For the first order reaction, A ⎯→ B. The initial concentra…

Chemistry Chemical Kinetics General Single Correct MCQ

Published on: August 14, 2026

For the first order reaction, A ⎯→ B. The initial concentration of A is a 0 , hence at any time t the concentration of B is x and x is given by

x = a 0 ( 1 + e –kt )

x = a 0

Text Solution

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The correct answer is:

rate equation is = k (a 0 –x)

∴ ln kt

or = e –kt

or 1 – = e –kt

or = 1 – e –kt or x = a 0 (1 – e

–kt )

or x = a 0

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