Use the Standard Reaction Enthalpies Given Below to Determine Δ_rH°

question 56

Multiple Choice

Use the standard reaction enthalpies given below to determine Δ_rH° for the following reaction: 2S(s) + 3O₂(g) → 2SO₃(g) Δ_rH° = ?
Given:
SO₂(g) → S(s) + O₂(g) Δ_rH° = +296.8 kJ
2SO₂(g) + O₂(g) → 2SO₃(g) Δ_rH° = -197.8 kJ

• A)-494.6 kJ mol^-1
• B)-692.4 kJ mol^-1
• C)-791.4 kJ mol^-1
• D)1583 kJ mol^-1
• E)-293.0 kJ mol^-1

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