The half life period for a first order reaction is 69.3s. Its rate constant is Options: A . &nbsp10−2s−1 B . &nbsp10−4s−1 C . &nbsp10s−1 D . &nbsp102s−1

Answer: Option A : A K = 0.693 t 1 2 = 0.693 69.3 = 10 − 2 s − 1

The half life period for a first order reaction is 69.3s. Its rate constant is

Question - The half life period for a first order reaction is 69.3s. Its rate constant is

Options:

A . 10−2s−1

B . 10−4s−1

C . 10s−1

D . 102s−1

Answer: Option A
:
A

K = \frac{0.693}{t_{\frac{1}{2}}} = \frac{0.693}{69.3} = 10^{- 2} s^{- 1}

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