Question

In a chemical reaction, when number of molecules of products are more than the number of molecules of reactants:

• A. entropy increases
• B. entropy decreases
• C. heat of vapourisation increases
• D. free energy increases

Answer 1

Answer: (A)

entropy increases

In a chemical reaction, when number of molecules of products are more than the number of molecules of reactants entropy increases as randomness or disorder increases. During the progress of the reaction, total number of molecules increases. This increases the disorder.