`N_(2(g))+2O_(2(g)) rarr 2NO_(2) +X kJ`
`2NO_((g))+O_(2(g)) rarr 2NO_(2(g))+Y kJ`
The enthalpy of formation of `NO` is

N_(2(g)) + 2O_(2(g)) rarr 2NO_(2) + xkJ, 2NO_((g)) + O_(2(g)) rarr 2NO_(2(g)) + ykJ . The enthalpy of formation of NO is

N_2(g) + 2O_2 (g) rarr 2NO_2 (g) + X kJ 2NO (g) + O_2(g) rarr 2NO_2 (g) + Y kJ the enthalpy of.formation of NO is

Given that : 2CO_((g))+O_(2(g))rarr2CO_(2(g)),DeltaH^(@)=-P kJ C_((s))+O_(2(g))rarr CO_(2(g)), DeltaH^(@)=-Q kJ the enthalpy of formation of carbon monoxide is :

2CO_((g))+O_(2(g))rarr 2CO_(2(g))+X KJ In the above equation X KJ refers to :

2CO_((g))+O_(2(g))rarr 2CO_(2(g))+X KJ In the above equation X KJ refers to :

Given C_((s)) + O_(2(g)) rarr CO_(2(g)), Delta H = -395 kJ , S_((g)) + O_(2(g)) rarr SO_(2(g)) , Delta H = -295 kJ , CS_(2(l)) + 3O_(2(g)) rarr CO_(2(g)) + 2SO_(2(g)) , Delta H = -1110 kJ The heat of formation of CS_(2(l)) is