The temperature coefficient of most of the reactions lies between:

Temperature coefficient is the ratio of rate constant of a reaction at a temperature and rate constant of the reaction when the temperature increases by 100C.

Let suppose a reaction:

A + B → C

Let K be the rate constant of the above reaction at temperature T

On increasing the temperature by 100C,

The new temperature will be(T+100)

Let rate constant at new temperature of the above reaction be K(T+100)

So, the temperature coefficient of the reaction will be:

Temperature coefficient : K/K(T+100)

Temperature coefficient of the most of the reaction lies between 2and 3more precisely.