[KitCh]

Here is the question:




I know how to solve this, which is product minus reactant or [4(-241.8 )] - [(N₂O₄)] (both H₂ and N₂ are 0) but I don't know what the value of N₂O₄ is since I don't have the book. I've tried Googling for it and trying different values but I keep getting the wrong answer.

Can someone please give me the standard enthalpy of formation of N₂O₄ in kJ/mol?


Thanks.

[JDeGra]

N2O4 (g)  is +11.1 kJ/mol

[KitCh]

N2O4 (g)  is +11.1 kJ/mol

Finally got the correct answer (-978.3 kJ)... thanks!