STANDARDChemistry-Chemical Kinetics
STANDARD Chemistry Zero Order Reactions MCQ Question
Type: MCQ-conceptual-Medium-Class 12
75% of a zero order reaction completes in 4h, 87.5% of the same reaction completes in:
A
6 h
B
12 h
C
8 h
D
2 h
Correct Answer
Option A
Detailed Explanation
For a zero order reaction, the time taken for completion is proportional to the concentration. Using the relation, t₇₅% = 3/2 × t₂₅%, we find t₈₇.₅% = 3/2 × 4 = 6h.
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