JEE Advanced · Chemistry · 19. Surface Chemistry
The given graphs/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and presure. Which of the following
- A I is physisorption and II is chemisorption
- B \(\mathrm{I}\) is physisorption and \(\mathrm{III}\) is chemisorption
- C IV is chemisorption and II is chemisorption
- D IV is chemisorption and III is chemisorption
Answer & Solution
Correct Answer
(C) IV is chemisorption and II is chemisorption
Step-by-step Solution
Detailed explanation
Graph (I) and (III) represent physisorption because, in physisorption, the amount of adsorption decreases with the increase of temperature and increases with the increase of pressure.
Graph (II) represent chemisorption, because in chemisorption amount of adsorption increases with the increase of temperature. Graph (IV) is showing the formation of a chemical bond, hence chemisorption.
Graph (II) represent chemisorption, because in chemisorption amount of adsorption increases with the increase of temperature. Graph (IV) is showing the formation of a chemical bond, hence chemisorption.
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