In chem 1b lab 5 Please what is the purpose of effect ofvtemperature and catalysts on rate In chem 1b lab 5 Please what is the purpose of effect ofvtemperature and catalysts on rate Please what is the purpose of effect ofvtemperature and catalysts on rate Solution Effect of temperature on rate of a teaction Rate of a reaction is increased by increase in temperature. For every 10°C the rate of a reaction doubles. The increase in rate of the reaction with temperature is due to increase in the number of high energy collisions. Effect of catalyst on rate of a teaction A catalyst dose not involved in a reaction but it can enhance the rate of a reaction. The catalyst is chemically unchaged after completion of reaction. Catalyst increases the rate of the reaction by lowering the activation energy need for the reactants. Furthermore, number of collisions result in a reaction increases, so the rate of reaction increases. For different types of reactios different types of catalysts are required. .