2Ce(IO3)4(aq) + 24H2C2O4(aq)→Ce2(C2O4)3(aq) + 4I2(aq) + 42CO2(g) + 24H2O(l)

What would it look like if Decrease the temperature (the reaction is exothermic).

rewrite the equation

There is no need to rewrite the equation, as decreasing the temperature would not change the chemical formula or the balance of the equation. However, decreasing the temperature would slow down the rate of the reaction, as exothermic reactions release heat and decreasing the temperature would reduce the amount of energy available for the reaction to occur. This would also affect the equilibrium of the reaction, potentially favoring the side with more reactants at lower temperatures.