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प्रश्न
What do you mean by selectivity of catalyst?
What do you understand by selectivity of catalyst?
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उत्तर
The ability of the catalyst to direct a reaction to yield a particular product is referred to as the selectivity of the catalyst. For example, by using different catalysts, we can get different products for the reaction between H2 and CO.
(i) \[\ce{CO_{(g)} + 3H2_{(g)} ->[Ni] CH4_{(g)} + H2O_{(g)}}\]
(ii) \[\ce{CO_{(g)} + 2H2_{(g)} ->[Cu/ZnO][CrO3] CH3OH_{(g)}}\]
(iii) \[\ce{CO_{(g)} + H2_{(g)} ->[Cu] HCHO_{(g)}}\]
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संबंधित प्रश्न
Define the term Catalysis.
Which of the following is the INCORRECT match?
The H+ ion in the hydrolysis of sucrose acts as ____________.
Which one of the following is an example for homogeneous catalysis?
Write a brief note on the mechanism of enzyme catalysis.
What is the difference between homogeneous and heterogeneous catalysis?
Describe the adsorption theory of catalysis.
Match List - I with List - II.
| List - I | List - II | ||
| (Processes/Reactions) | (Catalyst) | ||
| (A) | \[\ce{2SO2(g) + O2(g) -> 2SO3(g)}\] | (I) | Fe(s) |
| (B) | \[\ce{4NH3 (g) + 5O2(g) -> 4NO(g) + 6H2O (g)}\] | (II) | Pt (s) - Rh (s) |
| (C) | \[\ce{N2(g) + 3H2(g) -> 2NH3(g)}\] | (III) | V2O5 |
| (D) | \[\ce{Vegetable oil (l) + H2 -> Vegetable ghee (s)}\] | (IV) | Ni (s) |
Choose the correct answer from the options given below:
Match the catalysts to the correct processes:
| Catalysts | Process | ||
| (A) | TiCl4 | (i) | Wacker process |
| (B) | PdCl2 | (ii) | Ziegler-Natta polymerization |
| (C) | CuCl2 | (iii) | Contact process |
| (D) | V2O5 | (iv) | Deacon’s process |
In preparation of sulphuric acid from sulphur dioxide in lead chamber process. What substance is used as a catalyst?
