Question

Indicate the sign of Gº at low and high temperatures for the following reactions: NH3(g) + HCl(g)--> NH4Cl(s) Hº < 0

CaCO3(s) -->CaO(s) + CO2(g) Hº > 0

CH3OH(l) -->CH3OH(g)

2Cl2(g) + 7O2(g)--> 2Cl2O7(l) Hº > 0