Question

Why does increased temperature increase the reaction rate?

• A. Because it increases the amount of effective collisions between reactants
• B. Because it increases the concentration of the molecules
• C. Because it decreases the amount of collisions and the energy of molecules
• D. Because it decreases the energy of the system

Answer 1

The correct option is A Because it increases the amount of effective collisions between reactants

The increased temperature increase the reaction rate because it increases the amount of effective collisions between reactants.
With increase in the temperature, the number of molecules with energy equal to or greater than activation energy increases. This increases the number of effective collisions and the rate of the reaction.