Question

The rate at which a substance reacts depends on its :

• A. atomic weight
• B. atomic number
• C. molecular weight
• D. active mass

Answer 1

The correct option is D active mass

Explanation:

According to the "Law of mass action", rate of any chemical reaction is proportional to the product of the masses of the reacting substances, it is depend on their active mass.

Active mass is : The molar concentration of a substance taking part in a reaction.

Rate of the reaction is proportional to active mass

option D is correct