Question

Give four examples of heterogeneous catalysis.

Answer 1

Answer

(i) Oxidation of sulphur dioxide to form sulphur trioxide. In this reaction, Pt acts as a catalyst.


(ii) Formation of ammonia by the combination of dinitrogen and dihydrogen in the presence of finely divided iron.


This process is called the Haber's process.

(iii) Oswald's process: Oxidation of ammonia to nitric oxide in the presence of platinum.


(iv) Hydrogenation of vegetable oils in the presence of Ni.

Answer 2

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