Question

3. Equal volumes of sodium thiosulphate solution is taken in two boiling tubes. Heat
one boiling tube for sometime. Add dilute hydrochloric acid in equal amounts in both
the boiling tubes. Sulphur precipitates faster in the boiling tube which is heated.
a) Write down the chemical equation of the above reaction.
b) Name the factor that affects the rate of reaction in this experiment.
c) Why does the rate of reaction increase here?​

Answer 1

Answer:

Materials required: Sodium thiosulphate , hydrochloric acid, water , boiling tube, spirit lamp. Procedure: Prepare dilute solution of sodium thiosulphate in a beaker. Take equal volumes of the solution in two boiling tubes. Heat one boiling tube for some time. Add dilute hydrochloric acid in equal amounts in both the boiling tubes.

Observations: Reaction is faster in heated test tube.