(a) Transition metals can act as catalysts because these can change their oxidation state. How does Fe(III) catalyse the reaction between iodide and persulphate ions? (b) Mention any three processes where transition metals act as catalysts.

Question

Philoid · Accepted Answer

(a) Fe(III) acting as catalyst for the reaction between iodide and persulphate ions.

2Fe³⁺ + 2I^-→ 2Fe²⁺ + I₂

2Fe²⁺ + S₂O₈^2-→ 2Fe³⁺ + 2SO₄^2-

(b) Three processes where transition metals act as catalysts.

(i) Finely divided Nickel as catalyst for hydrogenation of vegetable oil

(ii) V₂O₅ as catalyst for contact process used in the manufacture of sulphuric acid

(iii) Finely divided iron as catalyst for Haber’s process in the manufacture of ammonia

(a) Transition metals can act as catalysts because these can change their oxidation state. How does Fe(III) catalyse the reaction between iodide and persulphate ions?(b) Mention any three processes where transition metals act as catalysts.

(a) Transition metals can act as catalysts because these can change their oxidation state. How does Fe(III) catalyse the reaction between iodide and persulphate ions?
(b) Mention any three processes where transition metals act as catalysts.