NEED HELP WITH CHEM....please?

Question

Hydrogen Peroxide is used as a bleaching agent, a disinfectant and medicinally as a tropical antibacterial agent. Hydrogen Peroxide decomposes according tp the reaction shown....
2H2O2(l)-->2H2O(l) +O2(g) (l= liquid g= gas)

Given the standard free energy of formation values shown below, calculate the free energy change for this reaction.
delta Gf (H2O2) = -120.4 kJ/mol
delta Gf (H2O) = -237.1 kJ/mol

Is the decomposition of hydrogen peroxide spontaneous at 25degrees C? briefly explain

Answer 1

delta G = -116.7 kJ
Yes.