Question

At 298 K, the Standard Heat of Combustion of Diamond is 395.3 kJ/mol and that of...

At 298 K, the Standard Heat of Combustion of Diamond is 395.3 kJ/mol and that of Graphite is 393.4 kJ/mol. Their Molar Entropies are 2.439 J/K and 5.694 J/K mol, respectively.

(a). Find G for the transition of Graphite ---> Diamond at 298K and 1atm. The density is 3.510 g/cm-3 for diamond and 2.260 g/cm-3 for graphite.

(b). Calculate the pressure at which diamond and graphite would be in equilibrium at 298K and 1300K.

Assuming that the Densities and H are independent of pressure

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