Methanol, ethanol, and n-propanol are three common alcohols. When 1.00 g of each of these alcohols is

Question:

Methanol, ethanol, and n-propanol are three common alcohols. When 1.00 g of each of these alcohols is burned in air, heat is liberated as shown by the following data:
(a) Methanol (CH3OH), 222.6 kJ;
(b) Ethanol (C2H5OH), 229.7 kJ;
(c) N-propanol (C3H7 OH), 233.4 kJ. Calculate the heats of combustion of these alcohols in kJ/mol.