In order to find the enthalpy of combustion of C3H8 how must
the enthalpy changes be arranged?
3C(graphite) + 4H,(g) + 50,(g)
H
ΔΗ,
C,H,(g) + 50,(g)
3CO,(g) + 4H,O(1)
Ο ΔΗ = ΔΗg + ΔΗ2
ΔΗg = ΔΗ1 + ΔΗ2
= 0 = ΔΗ + ΔΗ2 + ΔΗ3
ΔΗ,
ΔΗ,
