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प्रश्न
Write a note on catalytic poison.
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
Mixture of iodine and sodium sulphate is separated by ____________.
In the reaction, \[\ce{H2O2_{(aq)} ->[I^-_{( aq)}] H2O_{(l)} + \frac{1}{2} O2_{(g)}}\] iodide ion acts as ____________.
The H+ ion in the hydrolysis of sucrose acts as ____________.
Which one of the following is an example for homogeneous catalysis?
Match the following.
| Column I | Column II |
| A) V2O5 | (i) High density polyethylene |
| B) Ziegler – Natta | (ii) PAN |
| C) Peroxide | (iii) NH3 |
| D) Finely divided – Fe | (iv) H2SO4 |
Match the following.
| Column I | Column II |
| A) Pure nitrogen | (i) Chlorine |
| B) Haber process | (ii) Sulphuric acid |
| C) Contact process | (iii) Ammonia |
| D) Deacons Process | (iv) sodium azide (or) Barium azide |
Which of the following is the correct option?
What do you mean by activity and selectivity of catalyst?
What is the difference between homogeneous and heterogeneous catalysis?
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?
