The gas-phase reaction shown, between N2 and O2, was run in an apparatus designed to maintain a constant pressure.
(a) Writea balanced chemical equation for the reaction depicted and predict whether w is positive, negative, or zero.
(b) Using data from Appendix C, determine ¢H for the formation of one mole of the product. Why is this enthalpy change called the enthalpy of formation of the involved product?