If half-life period for a first order reaction is 2 min. The rate constant is

0.5 m i n^{- 1}

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1.386 m i n^{- 1}

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0.3465 m i n^{- 1}

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2 m i n^{- 1}

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Solution

The correct option is C $0.3465 m i n^{- 1}$
$k = \frac{0.693}{2} = 0.3465 m i n^{- 1}$

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