In: Chemistry
calculate
(a) the standard enthalpy, (
b) the standard Gibbs energy, of the reaction
4NO2(g) + O2(g) → 2N2O5(g)
Solution :-
4NO2(g) + O2(g) → 2N2O5(g)
Formula to calculate the standard enthalpy change of the reaction is
Delta H rxn = sum of delta H product – sum of delta H reactant
= [N2O5*2] –[ (NO2*4)+(O2*1)]
= [11*2]-[(33.2*4)+(0*1)]
= -110.8 kJ
Now lets calculate the free energy of the reaction
Delta Grxn = sum of delta G product – sum of delta G reactant
= [N2O5*2] –[ (NO2*4)+(O2*1)]
= [118*2]-[(51*4)+(0*1)]
= 32 kJ