First order reaction

Chemistry Level pending

What is the rate constant $k$ for the first-order decomposition of $\text{N}_{2}\text{O}_{5}(g),$ if the half life of $\text{N}_{2}\text{O}_{5}(g)$ is $8.06 \times 10^{4}$ s?

2.8\times 10^{-6}\text{ /s}

8.6 \times 10^{-6}\text{ /s}

1.72 \times 10^{-5}\text{ /s}

8.6 \times 10^{-5}\text{ /s}

1 solution

Tom Engelsman
Feb 7, 2017

$k = \frac{ln 2}{t_1/2} = \frac{ln 2}{8.06 \times 10^4} = \boxed{8.6 \times 10^{-6} s^{-1}}.$

First order reaction

1 solution

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