Chapter 5, Problem 116SCQ

Calculate Δ_rH° for the reaction

2 C(s) + 3 H₂(g) + ½ O₂(g) → C₂H₅OH(ℓ)

given the information below.

C(s) + O₂(g) → CO₂(g)

Δ_rH° = −393.5 kJ/mol-rxn

2 H₂(g) + O₂(g) → 2 H₂O(ℓ)

Δ_rH° = −571.6 kJ/mol-rxn

C₂H₅OH(ℓ) + 3 O₂(g) → 2 CO₂(g) + 3 H₂O(ℓ)

Δ_rH°= −1367.5 kJ/mol-rxn