XSIQ
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Chemistry - Temperature

Temperature

This refers to the temperature at which the reaction is carried out.

Increasing the temperature increases the kinetic energy of all particles
and so increases the number of collisions with energy greater than the
activation energy, i.e. with enough energy to break bonds in reactant
particles and allow the formation of product particles. The increase in the
number of collisions with energy greater than the activation energy
produces a faster rate of reaction.

The diagram below, where T2 T1 and the shaded area represents collisions
that have energy greater than Ea, shows that there are more such collisions
at the higher temperature.

Marble chips react faster with 2 M HCl(aq) at 80C than with 2 M HCl(aq) at
20C.

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