Consider these reactions, where M represents a generic metal. 1. 2M(s)+6HCl(aq)→2MCl 3 (aq)+3H 2 ( g) ΔH 1 =−793.0 kJ 2. HCl(g)→HCl(aq) ΔH 2 =−74.8 kJ 3. H 2 ( g)+Cl 2 ( g)→2HCl(g) ΔH 3 =−1845.0 kJ 4. MCl 3 ( s)→MCl 3 (aq) ΔH 4 =−257.0 kJ Use the given information to determine the enthalpy of the reaction 2M(s)+3Cl 2 ( g)→2MCl 3 ( s)
