The normal boiling point of a liquid 'X' is 400 K. Which of the following statement is true about the process `X(l)rarrX(g)`?

Options

A. At 400 K, and 1 atm pressure `DeltaG=0`
B. At 400 K, and 2 atm pressure `DeltaG=+ve`
C. At 400 K, and 1 atm pressure `DeltaG=0`
D. At 400 K, and 1 atm pressure `DeltaG=0`

Answer

A,B,C

Explanation

Boiling of a liquid at normal boiling point is a equilibrium process and on decreasing the pressure equilibrium will go forward and `DeltaG` will be negative and vice-versa.