Given chemical equations for these reactions
S(s) + O₂(g) → SO₂(g) ∆H˚ –296.8 kJ•mol–1
H₂(g) + ½ O₂(g) → H₂O(l) ∆H˚ –285.8 kJ•mol–1
H₂(g) + S(s) → H₂S(g) ∆H˚ –20.6 kJ•mol–1
What is the value of ∆H for the reaction below?
2 H₂S(g) + 3 O₂(g) → 2 H₂O(l) + 2 SO₂(g)

Question

Given chemical equations for these reactions
S(s) + O2(g) → SO2(g) ∆H˚ –296.8 kJ•mol–1
H2(g) + ½ O2(g) → H2O(l) ∆H˚ –285.8 kJ•mol–1
H2(g) + S(s) →  H2S(g) ∆H˚ –20.6 kJ•mol–1
What is the value of ∆H for the reaction below?
2 H2S(g) + 3 O2(g) → 2 H2O(l) + 2 SO2(g)

Accepted Answer

Correct answer: D.

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