The rate constant for the first-order decomposition of n2o is 3.40 s-1. what is the half-life of the decomposition?

Answer : The half-life of the decomposition is, 0.203 seconds.

Solution :

Half-life period of a first order reaction is defined as the the time taken for any fraction of the reaction to complete is independent of the initial concentration.

Formula of the half-life period of a first order reaction will be,

where,

= half-life of the reaction

k = rate constant =

Now put all the values in this formula, we get the half-life of the reaction.

Therefore, the half-life of the decomposition is, 0.203 seconds.

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