Problem: Calculate the enthalpy of combustion of propane, C3H8(g), for the formation of H2O(g) and CO2(g). The enthalpy of formation of propane is −104 kJ/mol.

FREE Expert Solution

Balanced Reaction Equation: C3H10(g) + 11/2O2(g) → 3 CO2(g) + 5 H2O(g)


The ∆Hf° values can be obtained from books or reliable internet sources:

ΔH°f C3H10 = –104.7 kJ/mol (given in the problem)

ΔH°f O2  = 0 kJ/mol (ΔH˚f is for 0 kJ/mol for elements in their standard states). 

ΔH°f CO2 = –393.5 kJ/mol

∆H°f H2O(g) = -241.8 kJ/mol


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Problem Details

Calculate the enthalpy of combustion of propane, C3H8(g), for the formation of H2O(g) and CO2(g). The enthalpy of formation of propane is −104 kJ/mol.

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Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.