Exams › NEET › Chemistry

Identify the correct statement for change of Gibbs energy for a system (ΔG_system) at constant temperature and pressure:

1. If ΔG_system = 0, the system has attained equilibrium
2. If ΔG_system = 0, the system is still moving in a particular direction
3. If ΔG_system < 0, the process is not spontaneous
4. If ΔG_system > 0, the process is spontaneous

Correct answer: If ΔG_system = 0, the system has attained equilibrium

Solution

At constant temperature and pressure, ΔG_system = 0 indicates that the system has reached equilibrium, as there is no net change in the system's state.

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