Question

A 1.63 g sample of ethanol, CH3CH2OH, is combusted in a bomb calorimeter. The temperature of the calorimeter increases by 4.44 K. If the heat capacity of the bomb is 652 J/K and it contains 2.83 kg of water, what is the enthalpy change per mole of ethanol combusted? The specific heat capacity of water is 4.18 J/g×K and the molar mass of ethanol is 46.07 g/mol.

A. -1.57×106 kJ/mol
B. 2.89×103 kJ/mol
C. 1.57×103 kJ/mol
D. -2.89×103 kJ/mol
E. -1.57×103 kJ/mol

Answer 1

E. -1.57×103 kJ/mol