The Haber reaction for the manufacture of ammonia is:
N2 + 3H2 → 2NH3
Without doing any experiments, which of the following can you say MUST be true?
The activation energy is positive.
Disappearance rate of N2 = 3 (Disappearance rate of H2).
Disappearance rate of H2 = 3 (Disappearance rate of N2).
The reaction is not an elementary reaction.
The reaction is first order in N2.
Reaction rate = -Δ[N2]/Δt.
Δ[H2]/Δt will have a positive value.