Question

15 points!! Find ∆H for the reaction using Hess’s Law. Show your work.

N₂H4(l) + H₂(g) → 2NH3(g)

a. N₂H4(l) + CH₂O(I) → CH₂O(g) + N₂(g) + 3H₂(g); ∆H = -38 kJ

b.N₂(g) + 3H₂(g) → 2NH3(g); ∆H = -46 kJ

c. CH4O(l)→ CH₂O(g) + H₂(g); ∆H = -65 kJ