Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCI(aq) - 2 MCI, (aq) + 3 H, (g) AH1 = -666.0 KJ 2. HCI(g) - HCI(aq) AH2 = -74.8 kJ 3. H, (g) + Cl, (g) - 2 HCI(g) AH 3 = -1845.0 kJ 4 . MCI, (s) - MCI, (aq) AH 4 = -123.0 kJ Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl, (g) - 2 MCI, (s) AH = kJ