Tin transforms from gray tin to white tin at 286 K and constant pressure of 1 atm. The following data are given for both gray and white tin:
CP = 21.6 + 18.2 x 10-3 T
Heat of transformation (?Htr) at 286 K = 2.1 J/mol
(a) Calculate the Gibbs free energy change of transformation at 286 K and 1 atm. Show all your calculations.
(b) Calculate the Gibbs free energy change of transformation at 500 K and 1 atm.