The rate of reaction increases with increase in activation energy.

A catalyst increases the rate of reaction because it : increases the activation energy, decreases the energy barrier for reaction, decreases the collision diameter, increases the temperature coefficient

Why the rate of a reaction increases with increase in temperature ?

The rate of reaction increases with increase of temperature because

The rate of a reaction increases on increasing the temperature.

The rate of reaction increases by the increase of temperature because

The rate of reaction increases or decreases with the increase in temperature?

The rate of reaction increases by the increase of temperature because

The rate of an exothermic reaction increases with increasing temperature.