Question

The combustion reaction for benzoic acid
C6H5CO2H(s) +
15
2
O2(g) →
7 CO2(g) + 3 H2O(ℓ)
has ∆H0
= −3226.7 kJ/mole. Use Hess’s
Law to calculate ∆H0
f
for benzoic acid.
mayonnaise.

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