Find ΔH for C₃H₈ (g)+ 6 H₂O (g)→ 3 CO₂ (g)+ 10 H₂ Given C₃H₈ (g)+ 3 H₂O (g)→ 3 CO (g)+ 7 H₂ (g)ΔH = 499 kJ CO (g)+ H₂O (g)→ CO₂ (g)+ H₂ (g)ΔH = -41 kJ

Question

Quizplus · Accepted Answer

Using Hess's Law, we can add the two given reactions to get the overall reaction: C₃H₈ (g)+ 6 H₂O (g)→ 3 CO₂ (g)+ 10 H₂ ΔH = ΔH1 + ΔH2 ΔH = (499 kJ) + (-41 kJ x 3) ΔH = 376 kJ Therefore, the answer is A.

Find ΔH for C3H8 (G)+ 6 H2O (G)→ 3 CO2

Find ΔH for C₃H₈ (G)+ 6 H₂O (G)→ 3 CO₂