Question

How can the rate of a reaction be increased?

Answer 1

Explanation:

There are many factors that are responsible for increasing the rate of reaction.

(1) Temperature: If the temperature increases, the kinetic energy of the molecules also increases. Hence, the collisions and ultimately the rate of reaction increases.

(2) The concentration of reactants: Higher the concentration, more will be the collision and hence more will be the rate of reaction.

(3) Pressure: Pressure is also directly proportional to the rate of reaction.

(4) Catalyst: Adding a catalyst increase the rate of reaction. Because it decreases the activation energy of the reactants. Hence, a small amount of energy is required by the reactants.

Hence, the above factors increases the rate of reaction.  

Answer 2

Answer and explanation;

-Rate of reaction is the speed at which the reactants are converted to products.

-Rate of reactions depends on a number of factors which includes;

• Concentration of reactants; increasing the concentration of reactants increases the rate of reaction.
• Temperature; An increase in temperature results to an increased rate of reaction. Increase in temperature increases the kinetic energy of molecules thus the collision per unit time also increases and hence the rate of reaction increases.
• Decreasing the size of particles of solid reactants also increases the rate of reaction. This is because smaller particles increases the surface area on which more collisions can occur thus a faster rate of reaction.
• Adding a catalyst also increases the rate of reaction. This is because catalysts lower the activation energy of reactants, minimum energy require by reactants for the reaction to take place. This thus increases the rate of reaction.