Lauric acid (C12/2402) is a typical fatty acid, a molecule with a long hydrocarbon chain and an
organic acid group (COOH) at the end. (a) Write a balanced equation for the complete
combustion of lauric acid to gaseous products. (b) Calculate AH°rxn for this combustion
(AH°+=-775.6 kJ/mol). (c) Calculate the heat (q) in kJ and kcal when 10.0 g of lauric acid is burned
completely. (AH° CO24g)=-393.5 kJ/mol, AH° $H20(g=-241.826 kJ/mol)
a.
b.
c.
If for 1 mole q =-6848 kJ, then fir 0.05 mole it is 0.05x(-6848)=-342.4 kJ
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