Given the following information determine the reaction Gibbs energy for the formation of silicon dioxide at 298 K

Si(s)+O2(g) →SiO2(s)

ΔfH°(Si(s))=0 kJ mol-1, S°(Si(s))=18.8 J mol-1 K-1

ΔfH°(O2(g))=0 kJ mol-1, S°(O2(g))=205.0 J mol-1 K-1

ΔfH°(SiO2­(s))=-910.7 kJ mol-1, S°(SiO2(s))=41.8 J mol-1 K-1

Answer to TWO decimals places in kJ mol-1

1 answer

dHo rxn = (n*dHo products) - (n*dHo reactants)