Rate Of A Chemical Reaction

For the reaction:
If concentration of is doubled and that of is halved, then


Hence, if the concentration of
[A] is doubled and
[B] is halved, then rate of reaction increases by 2 times.

Arrhenius proposed a quantitative relationship between the rate constant and temperature as:
where, = frequency factor
activation energy

For first order reaction the half-life period is independent of the initial concentration of the reactants.

The temperature coefficient is the ratio of two velocity constant having the difference of .
Temperature coefficient
For most of the reaction its value lies between 2 and 3 .