The variation of rate or reaction on temperature is given by Arhenius equation. This eqn is:

where,

k = Rate constant

Eact = Activation energy

R = Universal gas constant

T = Temperature in Kelvin

A = Constant called Arhenius factor

In a graph of lnk is plotted against 1/T it gives a straight line having y-intercept value lnA and slope -Eact/RT.

This shows that the rate constant is directly proportional to rate of reaction increase in temperature causes increase in rate of reaction.

If k1 and k2 are rate constant of a given reaction at T1 & T2.

Then,

From equation (i) and (ii) we get,

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