The half life period for a first order reaction is 69.3s. Its rate constant is Options: A . &nbsp 10 − 2 s − 1 B . &nbsp 10 − 4 s − 1 C . &nbsp 10 s − 1 D . &nbsp 10 2 s − 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^{- 2} s^{- 1}

B .

10^{- 4} s^{- 1}

C .

10 s^{- 1}

D .

10^{2} s^{- 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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