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Chemistry Chemical Kinetics General Single Correct MCQ
Published on: August 14, 2026

Consider a first order decomposition process A 3 ⎯→ A 2 A plot of concentration of A 3 and A 2 versus time is shown below. At time t A percentage of reactant de composed is

A
75%
B
50%
C
40%
D
30%

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Text Solution

Verified by Experts
The correct answer is:
C

Let initial concentration is of ,

then after sometime let it decrease by ,

so concentration increases by due to stoichiometric ratios, when equal,

Hence, concentration of reduced by th or .

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