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प्रश्न
Write a note on catalytic poison.
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उत्तर
Certain substances when added to a catalysed reaction, decrease or completely destroys the activity of the catalyst and they are often known as catalytic poisons.
For example, In the reaction, \[\ce{2SO2 + O2 -> 2SO3}\] with a Pt catalyst, the poison is AS2O3 i.e., AS2O3 destroys the activity of pt. AS2O3 blocks the activity of the catalyst. So, the activity is lost.
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संबंधित प्रश्न
Define the term Catalysis.
Mixture of iodine and sodium sulphate is separated by ____________.
The H+ ion in the hydrolysis of sucrose acts as ____________.
Which one of the following is an example for homogeneous catalysis?
What is the difference between homogeneous and heterogeneous catalysis?
Describe the adsorption theory of catalysis.
Zeigler-Natta Catalyst is ______.
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?
