What is the standard Gibbs free energy for the transformation of diamond to graphite at 298°K?
Cdiamond→CgraphiteCdiamond→Cgraphite
ΔGrxnGrxn°
Elemental carbon usually exists in one of two forms: graphite or diamond. It is generally believed that diamonds last forever. Here are the standard enthalpy (ΔH) and entropy (ΔS) of formation values for diamond and graphite.