Question

The figure shows a section of the phase boundary separating the vapour (1) and liquid (2) states of water in the P-T plane. Here, C is the critical point. μ1. ν1 and s1 are the chemical potential, specific volume and specific entropy of the vapour phase respectively, while μ2. ν2 and s2 respectively denote the same for the liquid phase. Then

• A. μ1 = μ2 along AB
• B. ν1 =ν2 along AB
• C. s1 =s2 along AB
• D. ν1 =ν2 at the point C

Answer 1

Answer: (A), (D)

μ1 = μ2 along AB

Answer 2

The correct option is (A): μ1 = μ2 along AB and (D): ν1 =ν2 at the point C