Ethanol undergoes combustion in oxygen to produce carbon dioxide gas and liquid water. The standard heat of combustion of ethanol, c2h5oh(l), is -1366.8 JK/mol. Given that [co2(g)] = -393.5kg/mol and [h20(l) = -285.8 KJ/ mol, what is the standard enthalpy of formation of ethanol?

Explanation:

Heat of combustion of = -1366.8 kJ/mol

Heat of formation of = -393.5 kJ/mol

Heat of formation of = -285.8 kJ/mol

The reaction is

Assuming is the standard enthalpy of formation of ethanol

The standard enthalpy of formation of ethanol is .

there are two significant figures.

50.23 i believe is correct but don't quote me on that.