The reaction between potassium permanganate KMnO4 and oxalic acid C2H2O4 is a redox reaction, where potassium permanganate acts as an oxidizing agent and oxalic acid acts as a reducing agent. The reaction can be represented as follows:2 KMnO4 + 5 C2H2O4 + 3 H2SO4 K2SO4 + 2 MnSO4 + 10 CO2 + 8 H2OThe intensity of light can affect the rate of certain chemical reactions, particularly photochemical reactions, which are driven by the absorption of light energy. However, the reaction between potassium permanganate and oxalic acid is not a photochemical reaction, and it is primarily driven by the transfer of electrons between the reactants.In general, the rate of this reaction is not significantly affected by the intensity of light. Instead, factors such as temperature, concentration of reactants, and the presence of catalysts have a more significant impact on the reaction rate. Increasing the temperature or the concentration of reactants will generally increase the rate of the reaction, while the presence of a catalyst can also speed up the reaction by providing an alternative reaction pathway with a lower activation energy.That being said, it is possible that under certain conditions, the intensity of light could have a minor effect on the reaction rate. For example, if the reaction mixture is exposed to intense light, it could cause a slight increase in temperature, which in turn could increase the reaction rate. However, this effect would likely be small compared to the influence of other factors such as temperature and reactant concentrations.