Question

What happens when gas in a closed vessel is heated :

• A. An increase in entropy
• B. A decrease in entropy
• C. An increase in heat of vaporization
• D. An increase in free energy

Answer 1

The correct option is A An increase in entropy

When a gas in closed vessel is heated.
Energy is given to the gas molecues in form of heat, kinetic energy of gas molecules increases and their motion becomes more random.
Hence, randomness increases in this process which means, entropy increases.