Advertisements
Advertisements
प्रश्न
What do you mean by selectivity of catalyst?
What do you understand by selectivity of catalyst?
Advertisements
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) \[\ce{CO_{(g)} + H2_{(g)} ->[Cu] HCHO_{(g)}}\]
APPEARS IN
संबंधित प्रश्न
Define the term Inhibition.
In the reaction, \[\ce{H2O2_{(aq)} ->[I^-_{( aq)}] H2O_{(l)} + \frac{1}{2} O2_{(g)}}\] iodide ion acts as ____________.
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?
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 |
Write a brief note on the mechanism of enzyme catalysis.
Write a note on catalytic poison.
Describe the adsorption theory of 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 |
