Question

list two reasons why adding heat to a reaction system will increase the rate of the reaction?

Answer 1

Adding heat to the reaction system will increase the rate of the reaction. when reaction reaction taking place at room temperature around 25-30° C, if you heat 10° C more it will averagely double the rate of reaction.

1. heat will incerase kinetic energy of reactants molecules.

2. heat will increase speed collisions (faster reaction) in between the reactants.when collisions faster chemical change takes place.

when you apply heat more, required kinetic energy to reach the activation energy barrier, then only bond dissociation and bond formation will occur , this leads to new products. the average kinetic energy increases caused by the reactants absorbed heat, due to this greater proportion of the reactant molecules now has the minimum or activation energy to react.So, at a higher temperature, reactants with the higher kinetic energies.Therefore there will be more collisions with increased energy to break bonds to get new bonds.