Question

The rate of a chemical reaction generally increases rapidly even with small temperature increase because of the rapid increase in the:

• A. collision frequency
• B. fraction of molecules
• C. activation energy
• D. average kinetic energy of molecules.

Answer 1

Answer: (B)

fraction of molecules

It was observed that for most of the reactions, rate increases with the increase in temperature. For most of the reactions, it was found that the rate of the reaction increases two or three fold with the increase in ${10}^{o}C$ temperature.

The rate of a chemical reaction generally increases rapidly even for small temperature increase because of rapid increase in the fraction of molecules with proper orientation.