Eleanor Griffin

Chemistry

24 August, 14:33

Given these reactions, where X represents a generic metal or metalloid.

1) H₂ (g) + 1 2 O₂ (g) ⟶ H₂O (g); ΔH₁ = - 241.8 kJ

2) X (s) + 2 Cl₂ (g) ⟶ XCl₄ (s); ΔH₂ = + 475.3 kJ

3) 1 2 H₂ (g) + 1 2 Cl₂ (g) ⟶ HCl (g); ΔH₃ = - 92.3 kJ

4) X (s) + O₂ (g) ⟶ XO₂ (s); ΔH₄ = - 574.1 kJ

5) H₂O (g) ⟶ H₂O (l); ΔH₅ = - 44.0 kJ

What is the enthalpy, Δ H, for this reaction?

XCl₄ (s) + 2 H₂O (l) ⟶ XO₂ (s) + 4 HCl (g)