Consider the reaction 4 NO_(2)(g) +O_(2)(g)rarr 2N_(2)O_(5)(g), Delta_(r)H = - 111 kJ . If N_(2)O_(5)(s) is formed instead ofN_(2)O_(5)(g) in the above reaction, the Delta_(r)H value will be ( given , DeltaHof sublimation for N_92)O_(5) is 54kJ mol^(-1))

Consider the reaction 4 NO_(2)(g) +O_(2)(g)rarr 2N_(2)O_(5)(g), Delta_

1.	Consider the reaction 4 NO_(2)(g) +O_(2)(g)rarr 2N_(2)O_(5)(g), Delta_(r)H = - 111 kJ . If N_(2)O_(5)(s) is formed instead ofN_(2)O_(5)(g) in the above reaction, the Delta_(r)H value will be ( given , DeltaHof sublimation for N_92)O_(5) is 54kJ mol^(-1))
Answer» `- 165kJ` `+54 kJ` `+219 kJ` ` -219 kJ` SOLUTION : By HESS's LAW,`DELTAH+ 54 = - 111kJ` or `DeltaH= - 165kJ`