Use the standard free energies of formation given in Appendix G in order to determine the standard free energy change for each of these reactions.

Use the standard free energies of formation given in Appendix G in order to determine the standard free energy change for each of these reactions. Determine whether or not the reaction is spontaneous under standard conditions.  

N2+3H2 →2NH3 2C6H6(g)+15O2 →12CO2(g)+6H2O(g) 2H2O(g)+O2(g)→2H2O2(g)