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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
Define the term Catalysis.
In the reaction, \[\ce{H2O2_{(aq)} ->[I^-_{( aq)}] H2O_{(l)} + \frac{1}{2} O2_{(g)}}\] iodide ion acts as ____________.
171 g of sucrose on hydrolysis gives ____________ mole(s) of glucose.
(Atomic wt: C = 12, H = 1, O = 16)
Which of the following is the INCORRECT match?
The H+ ion in the hydrolysis of sucrose acts as ____________.
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 |
What are enzymes?
What do you mean by activity and selectivity of catalyst?
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:
