General Chemsitry.

Q: for which of the following reaction is standard

enthalpy change equal to the heat of formation of the product?

keep it short.

explain concept and show work plz.

For which one of the following reactions is Hrxn equal to the heat of formation of the product? a) N2(g)+3H2(g)2NH3(g) b) 1/2N2(g)+O2(g)NO2(g) c) 6C(s)+6H(g)C6H6(l) d) P(g)+2H2(g)+Br(g)PH4Br(I) e) 12C(s)+11H2(g)+11O(g)C12H22O11 (s)