Choose the correct equation for the standard enthalpy of formation of CO(g), where change Hf for CO= -110.5kJ/mol? (gr indicates graphite)
(a) C(gr) + O(g) --> CO(g) changeH = -110.5kJ
(b) C(gr) + CO2(g) ---> 2CO(g) changeH = -110.5kJ
(c) C(gr) + (1/2)O2(g) --> CO(g) changeH= -110.5kJ
(d) 2C(gr) + O2(g) ---> 2CO(g) changeH= -110.5kJ
(e) CO(g) ---> C(gr)+O(g) change H= -110.5kJ