Question

How can the rate of reaction be increased?

Answer 1

In order to answer this question, we should have the knowledge of chemical kinetics and activation energy. There are various factors that affect the rate of reaction. We should remember that with the increase in temperature, the kinetic energy of particles increases.

Complete step by step answer:
- As we know that as there is increase in the temperature then there is increase in the reaction rates this is because of the increase in the number of high energy collisions between the molecules. Temperature is basically a measure of the average kinetic energy of the molecules that are in motion.
- It is found that if the temperature is raised then the kinetic energies of all reactants are increased, then there are more collisions per second. And the greater fraction of these leads to the chemical reaction.
- Hence, according to the Arrhenius equation, the rate of reaction will increase with increase in temperature. We can assume that the rate of all the reactions increases as temperature increases, and this does not depend on whether they are endothermic and exothermic reactions. We can write the equation as:
$\ln k = \dfrac{-Ea}{RT}+\ln A$
- Hence, we can say that rate of reaction be increased with the increase in temperature

Note: - As we know that there is a general rule that the rate of homogeneous reaction is found to be double with every ten-degree rise in the temperature. And this ratio of rate constant is known as the temperature coefficient of a reaction.