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Q.

The half - life of a first order reaction having rate constant $K = 1.7 \times 10^{- 5} s^{- 1}$ is

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a

12.1 h

b

9.7 h

c

11.3 h

d

1.8 h

answer is C.

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Detailed Solution

$K = 1.7 \times 10^{- 5} s^{- 1}$

$t_{1 / 2} = \frac{0.693}{K} = \frac{0.693}{1.7} \times 10^{5} = 11.3 h$

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