STANDARDChemistry-Chemical Kinetics
STANDARD Chemistry First Order Reactions MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A first order reaction is 50% completed in 1.26 × 10¹⁴ s. How much time would it take for 100% completion?
A
1.26 × 10¹⁵ s
B
2.52 × 10¹⁴ s
C
2.52 × 10²⁸ s
D
Infinite
Correct Answer
Option D
Detailed Explanation
A first order reaction theoretically never reaches 100% completion as it approaches completion asymptotically. Therefore, it would take infinite time.
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