Ammonium nitrate is decomposed in two ways according to the following chemical reaction equations: 1. NH4NO3 (k) = N2O (g) + 2H2O (g); 2. NH4NO3 (k) = N2 (g) + 1/2O2 (g) + 2H2O (g). Which of the following reactions is more probable and which is more exothermic at 25*C? How will the likelihood of temperature reactions change?