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The plots of the extent of adsorption (x/m) Vs pressure at different temperature are as follows; The correct order of increasing temp for curves I, II, III, IV are ;

Options

  1. AT 1 > T 2 > T 3 > T 4
  2. BT 4 > T 3 > T 2 > T 1
  3. CT 3 > T 2 > T 1 > T 4
  4. Dcan't be predicted

Correct answer

B. T 4 > T 3 > T 2 > T 1

Step-by-step solution

Physisorption is exothermic in nature. Therefore, in accordance with Le-Chatliers principle, it decreases with increase in temperature. This means physisorption occurs at low temperature more readily. So, The correct order of temperature for curves I, II, III, IV are : T 4 > T 3 > T 2 > T 1

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