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QUESTION

Consider these reactions, where M represents a generic metal. 2M(s)+6HCl(aq)2MCl 3 (aq)+3H 2 (g)H 1 =718.0 kJ HCl(g)HCl(aq) H 2 =74.8 kJ H 2 (g)+Cl 2...

Consider these reactions, where M represents a generic metal.

  1. 2M(s)+6HCl(aq)⟶2MCl  3 (aq)+3H  2 (g)ΔH 1 =−718.0 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 =−198.0 kJ 

Use the given information to determine the enthalpy of the reaction

2M(s)+3Cl  2 (g)⟶2MCl  3 (s) 

ΔH= ____kJ 

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