Question

What happens when you increase the temperature of a reaction?

Answer 1

D. More collisions occur and the time required for the reaction decreases
This happens because according to collision theory, when energy (in this case, thermal energy) is applied to particles, they move/vibrate more quickly. 

Answer 2

Answer: Option (D) is the correct answer.

more collisions occur and the time required for the reaction decreases.

Explanation:

When we increase the temperature of reactant molecules then there will occur an increase in the kinetic energy of molecules.

Also,      K.E = $\frac{3}{2}kT$

So, kinetic energy is directly proportional to the temperature. As a result, more number of collisions will take place between the molecules due to which there will be an increase in the rate of reaction.

Therefore, we can conclude that when you increase the temperature of a reaction then more collisions occur and the time required for the reaction decreases.