Law Of Mass Action And Rate Constant
Category : JEE Main & Advanced
The rate at which a substance reacts is directly proportional to its active mass and the rate at which a reaction proceeds is proportional to the product of the active masses of the reacting substances.
Rate \[=\left( \frac{dx}{dt} \right)\propto {{[A]}^{a}}{{[B]}^{b}}\]; \[\left( \frac{dx}{dt} \right)=k{{[A]}^{a}}{{[B]}^{b}}\]
Where k is called rate constant or velocity constant.
When \[[A]=[B]=1\ mol/litre\], then \[\frac{dx}{dt}=k\]
Thus, rate constant k is also called specific reaction rate.
Where \[n=\] order of reaction.
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