Calculate Enthalpy For Reactions

Question

Consider these reactions, where M represents a generic metal.

1. 2M(s) + 6HCl(aq) → 2MCl₃(aq) + 3H­₂(g)                  ΔH₁ = -881.0 kJ

2. HCl(g) → HCl(aq)                                                      ΔH₂ = -74.8 kJ

3. H₂(g) + Cl₂(g) → 2HCl(g)                                          ΔH₃ = -1845.0 kJ

4. MCl₃(s) → MCl₃(aq)                                                   ΔH₄ = -316.0 kJ

Use the information above to determine the enthalpy of the following reaction

2M(s) + 3Cl₂(g) → 2MCl₃(s)                                      ΔH = __________ kJ

Summary

The question belongs to Chemical Engineering and it discusses about calculation of enthalpy for the reactions given in the question.

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