Water gas, a mixture of H2 and CO, is an important industrial fuel produced by the reaction of steam with red hot coke, essentially pure carbon.
C(s) + H20(g) —. CO(g) + H2(g)
(a) Assuming that coke has the same enthalpy of formation as graphite, calculate AH2980 (in kJ/mop for this reaction.
(b) Methanol, a liquid fuel that could possibly replace gasoline, can be prepared from water gas and additional hydrogen at high temperature and pressure in the presence of a suitable catalyst.
2 H2(g) + CO(g) —> CH3OH(g)
Under the conditions of the reaction, methanol forms as a gas. Calculate AH°298 (in kJ/mol) for this reaction.
Calculate AH2g80 (in kJ/mol) for the condensation of gaseous methanol to liquid methanol.
(c) Calculate the heat of combustion (in kJ) of 1.20 mol of liquid methanol to H20(g) and CO2(g).