First slide

First order reactions

Question

For a first order reaction, rate constant is 0.00693 min^-1. Half life of the reaction is ------- minutes

Moderate

A

100
B

10
C

1000
D

1

Solution

$For a first order reaction, t_{\frac{1}{2}} = \frac{0.693}{K}; t_{\frac{1}{2}} = \frac{0.693}{0.00693 \min^{- 1}} = 100 minutes;$

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