Question

The enthalpies of combustion of carbon and carbon monoxide are  -393.5 and –283kJ mol^–1 respectively. The enthalpy of formation of carbon monoxide permole is

(a) 110.5kJ 

(b) 676.5kJ

(c) –676.5kJ 

(d) –110.5kJ.

Answer 1

(d) : C_(s) + O_2(g) →  CO_2(g);