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? True False  The reaction is not an elementary reaction. True False  The activation energy is positive. True False  Reaction rate = -Δ[N2]/Δt. True False  Disappearance rate of N2 = 3 (Disappearance rate of H2). True False  Δ[H2]/Δt will have a positive value. True False  The reaction is first order in N2. True False  Disappearance rate of H2 = 3 (Disappearance rate of N2).

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