Answer:
III only
Explanation:
The rate of a chemical reaction (when reactant particles are gases) is increased by the following factors
- increase in temperature
- increase in pressure
- addition of catalyst
The only correct option from the question is III
A catalyst increases the rate of chemical reaction by reducing the activation energy of the reaction. Activation energy is the minimum amount of energy required for a reaction to occur. So, when the activation energy is lowered, the time required to complete a reaction reduces, hence the rate of reaction increases.
