Is there a catalyst in the following multi-step reaction?

[匿名]

2016-06-12 5:20 pm

1. H+(aq) + HNO2(aq) -> NO+(aq) + H2O(l)

2. NH4+ -> NH3(aq) + H+(aq)

3. NO+(aq) + NH3(aq) -> NH3NO+(aq)

4. NH3NO+(aq) -> H3O+(aq) + N2(g)

回答 (1)

fooks

2016-06-12 5:36 pm

✔ 最佳答案

1. H⁺(aq) + HNO₂(aq) → NO⁺(aq) + H₂O(l)
2. NH₄⁺(aq) → NH₃(aq) + H⁺(aq)
3. NO⁺(aq) + NH₃(aq) → NH₃NO⁺(aq)
4. NH₃NO⁺(aq) → H₃O⁺(aq) + N₂(g)

A catalyst is chemically unchanged at the end of the reaction. This is because the catalyst is firstly consumed in the former step, and the same amount of catalyst is regenerated in the latter step.

Refer to the four steps. H⁺(aq) is consumed in step 1, and same amount of H⁺(aq) is then regenerated in step 2. Hence, H⁺(aq) acts as a catalyst of this reaction.

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