Question

Why in the redox titration of $KMn{0}_4$ vs oxalic acid, we heat oxalic acid solution before starting the titration?

Answer 1

The reaction between $KMn{O}_4$ and oxalic acid is very slow. By raising the temperature, we can enhance the rate of reaction.

We heat oxalic acid solution because after heating, more number of reactant particles with energy greater than the activation energy becomes available for a reaction. So, in order to increase the energy, temperature must be increased which is only possible by heating the oxalic acid solution.

So, when the temperature increases, molecules having energy greater than activation energy also increases, which increases the rate of the reaction.