Discussion
For a closed system at constant temperature and volume, the criterion of equilibrium is that
Answer: D
Correct answer: the Helmholtz energy is a minimum
Fixing temperature and volume rather than temperature and pressure changes which potential is minimised: it is the Helmholtz energy \( A = U - TS \). The pattern is general - each potential is minimised at equilibrium when its own natural variables are the ones held constant - and applying the Gibbs criterion to a constant-volume system is a common and consequential error.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development