Compute the amount of heat released (absolute value) when 2.3 kg of liquid ethanol is burned in excess oxygen to make carbon dioxide and liquid water.

Answer 1

2C2H5OH + 6O2 ==> 4CO2 + 6H2O
Calculate delta H (DHrxn) for the reaction from
DHrxn = (n*DHf products) - (n*DHf reactants)
Then heat released = DHrxn x (2,300/2*molar mass C2H5OH)