Which equation is a correctly written thermochemical equation?
Question 8 options:
NH4Cl --> NH4+ + Cl-
2C8H18 + 25O2 --> 16CO2 + 18H2O,
ΔH= −5,471 kJ/mol
Fe (s) + O2 (g) --> Fe2O3 (s), ΔH= −3,926 kJ
C3H8 (g) + 5O2 (g) --> 3CO2 (g) + 4H2O (l), ΔH= −2,220 kJ/mol