An experimental drug, D, is known to decompose in the blood stream. Tripling the concentration of the drug increases the decomposition rate by a factor of nine. Write the rate law for decomposition of D and give the units of the rate constant in terms of seconds.

The rate law of the decomposition reaction is :

The unit of the rate constant  will be

Explanation:

The rate law can be written as';

..[1]

On tripling concentration of the drug increases the decomposition rate by a factor of nine.

...[2]

[1] ÷ [2]

On solving for x , we get;

x = 2

Second order reaction

The rate law of the decomposition reaction is :

unit rate constant will be :

The unit of the rate constant  will be

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