The materials required to conduct as the experiment to study the relation between temperature and speed of chemical reaction are given.
Boiling tubes, Sodium thiosulphate, Dil. HCl, Spirit Lamp, Beaker, water
a) Write down the procedure of the experiment.
b) Explain how the temperature influences the speed of the chemical reaction.

Explanation

a) Prepare a dilute solution of sodium thiosulphate in a beaker. Take equal volumes of this solution in two boiling tubes. Heat one of the tube for some time. Add equal amount of dil. HCl in both the boiling tubes.
When temperature increases the number of molecules with threshold energy increases. As a result the number of effective collisions increases and thus the rate of the reaction also.