Question

The entropy of an isolated system is ______ at equilibrium.
1. maximum
2. negative
3. zero
4. minimum

Answer 1

Correct Answer - Option 1 : maximum

Explanation:

The second law of thermodynamics:

• The entropy of an isolated system not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium.

ΔSTotal = ΔSSystem + ΔSsurrounding

• The second law of thermodynamic actually deals with the quality of the energy. As per the second law of thermodynamic whenever low-grade energy transfer from one state to another state some randomness get associated with the energy and the quality of energy get degraded.
• The second law of thermodynamics introduces the concept of entropy.