2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g

Part B
Calculate the standard enthalpy change for the combustion of 1 mol of liquid methanol, assuming H2O(g) as a product.

Part C
Calculate the heat produced by combustion per liter of methanol. Methanol has a density of 0.791 g/mL.

Part D
Calculate the mass of CO2 produced per kJ of heat emitted.

5 answers

B.
dHrxn = (n*dHformation products) - (n*dH formation reactants)

C.
Use density to convert 1L to grams. Then
You know from part B the dH for 1 mol. Convert the mass in grams of 1L CH3OH to mols, the dH/mol x # mols = ?

D.
From part B you know #kJ/2 mol CH3OH and that's the same as the #kJ/2 mol CO2 (from the equation that 2 mol CH3OH = 2 mol CO2). So convert #kJ/2 mol CO2 or #kJ/2*44 g CO2 or #kJ/88g CO2 to 1 kJ/?g CO2

15 ,67

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