Paper: CSIR-NET June 2021 · Subject: Physical Chemistry · Chapter: Thermodynamics · Topic: Laws State Functions · Marks: 2 · Difficulty: Hard
When yellow phosphorous is converted to red phosphorous, the entropy and volume of the system do not change. The order of this phase transition is most likely to be
(a)3
(b)2
(c)1
(d)0
Answer
Answer: B ✓ checked by 4AB · confidence medium
Explanation
No discontinuity in S or V (first derivatives of G) rules out a first-order transition; it is most likely second order (b).