Question

What will be the change in the molar gibbs energy (j/mol) of liquid water when the pressure changes from 10 pa to 3x10 pa isothermally at 300 k. (assuming water to be incompressible)(density= 1 g/ml)?

Answer 1

Dear Student,

◆ Answer -

∆Gm = 2740 J/mol

● Explanation -

# Given -

Pi = 10 Pa

Pf = 30 Pa

# Solution -

Molar Gibbs energy of an ideal gas is calculated by -

∆Gm = 2.303 RT log(Pf/Pi)

Substitute values,

∆Gm = 2.303 × 8.314 × 300 × log(30/10)

∆Gm = 5744 × 0.4771

∆Gm = 2740 J/mol

Therefore, Molar Gibbs energy of liquid water is 2740 J/mol.

Thanks dear. Hope this helps you..