(a) The change in the Gibbs energy of a certain constant-pressure process was found to fit the expression ΔG/J = -85.40 + 36.5(T/K). Calculate the value of ΔS for the process.
(b) The change in the Gibbs energy of a certain constant-pressure process was found to fit the expression ΔG/J = -73.1 + 42.8(T/K). Calculate the value of ΔS for the process.