Calculate the standard free energy of the following reactions
at 25C, using standard free energies of formation.
a. C2H4(g) � 3O2(g) ±£ 2CO2(g) � 2H2O(l)
b. CaCO3(s) � 2H�(aq) ±£ Ca2�(aq) � H2O(l) � CO2(g)
1 answer
dHrxn = (n*dHf products) - (n*dHf reactants)