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A first order reaction has a half-life of 693 s. Its rate constant is
A1.0 x 10^-3 s^-1
B1.0 x 10^-2 s^-1
C6.9 x 10^-3 s^-1
D4.8 x 10^5 s^-1
Answer & Solution
Correct answer: A. 1.0 x 10^-3 s^-1
k = 0.693/693 s = 1.0 x 10^-3 per second.
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