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First Order Reaction

The decomposi...

Question

The decomposition of hydrogen peroxide is a first-order reaction. The half-life of the reaction is 17 minutes. What is the rate constant of the reaction?

A

0.0508

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B

0.0408

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C

0.0612

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D

0.0712

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Solution

The correct option is B 0.0408
$k = \frac{0.693}{t_{\frac{1}{2}}}$
$k = \frac{0.693}{17} = 0.04077 m i n^{- 1} (a p p r o x i m a t e l y = 0.0408 m i n^{- 1}$ )

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