Enthalpy of combustion of Rhombic sulphur is -2400 kJ/mole. Enthalpy os formation sulphur dioxide is

Rhombic sulphur is S8(α)S8α+8O2g→8SO2g,ΔH=−2400 kJ ;Dividing throughout by 818S8α+O2g→SO2g,ΔH= -300 kJ ;Standard enthalpy of formation of SO2 is -300 kJ/mole ;