Question

Calculate the change in entropy that occurs in the system when 1.49 mol of acetone (C3H6O) condenses from a gas to a liquid at its normal boiling point (56.1 ∘C) The heat of vaporization is 29.1 kJ/mol.

Answer 1

dGo = dHo - TdS
dGo at equilibrium is zero.
You know dH from heat vapand you know T. Solve for dS.(delta S)
Post your work if you get stuck.