Consider these reactions, where M represents a generic metal. 1.  2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)   Δ?1=−693.0 kJ 2.  HCl(g)⟶HCl(aq)                                        Δ?2=−74.8 kJ 3.  H2(g)+Cl2(g)⟶2HCl(g)                            Δ?3=−1845.0 kJ 4.  MCl3(s)⟶MCl3(aq)                                  Δ?4=−149.0 kJ   Use the given information to determine the enthalpy of the reaction   2M(s)+3Cl2(g)⟶2MCl3(s)

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