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Question
The rate constant for a first order reaction is 100 s–1. The time required for completion of 50% of reaction is _______.
(A) 0.0693 milliseconds
(B) 0.693 milliseconds
(C) 6.93 milliseconds
(D) 69.3 milliseconds
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Solution
(C)
6.93 milliseconds
t1/2 = 0.693/100
= 6.93 x 10-3 seconds
= 6.93 milliseconds
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