The free energy of formation of one mole of compound refers to a particular chemical equation. For each of the following, write that equation.
a) Water: 2H₂(g)+O₂(g)→2H₂O(l)
b) Carbon dioxide: C(s)+O₂(g)→CO₂(g)
c) Methane: CH₄(g)→C(s)+2H₂(g)
d) Ammonia: N₂(g)+3H₂(g)→2NH₃(g)