Question

Calculate the enthalpy of formation of carbon disulphide given the following thermochemical
equations of combustion of CS2(s), C(s) and S(s):
CS2(s) + 3O2(g)
à ƒ ¢ † ’
CO2(g) + 2SO2(g) à ƒ ¢ ˆ †H
o = - 1109 kJ
C(s) + O2(g)
à ƒ ¢ † ’
CO2(g) à ƒ ¢ ˆ †H
o = - 394.6 kJ
S(s) + O2(g)
à ƒ ¢ † ’
SO2(g) à ƒ ¢ ˆ †H
o = - 298.7 kJ

Answer 1

-1109+-394.6--298.7

= -1204.9kJ