Increasing the temperature of the substance increases the fraction
of molecules, which collide with energies greater than Ea It is clear
from the diagram that in the curve at (t + 10), the area showing the
fraction of molecules having energy equal to or greater than activation
energy gets doubled leading to doubling the rate of a reaction In the Arrhenius equation (3 18) the factor e -Ea /RT
 corresponds to
the fraction of molecules that have kinetic energy greater than Ea