Question:
In which one of the following properties, physisorption and chemisorption resemble each other?
In which one of the following properties, physisorption and chemisorption resemble each other?
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Only similarity: both depend on surface area. Everything else differs.
Updated On: May 2, 2026
- Force of attraction
- Enthalpy of adsorption
- Temperature effect
- Effect of surface area
- Number of adsorption layers
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The Correct Option is D
Solution and Explanation
Concept: Adsorption types comparison
There are two main types of adsorption:
• Physisorption (weak van der Waals forces)
• Chemisorption (strong chemical bonding) ---
Step 1: Compare properties
• Force of attraction → Different
• Enthalpy → Different (low vs high)
• Temperature effect → Opposite behavior
• Surface area → SAME effect
• Layers → Different (mono vs multi) ---
Step 2: Explanation of correct option
Both adsorption types:
• Increase with increase in surface area
• More surface → more adsorption sites --- Final Answer: \[ \boxed{\text{Effect of surface area}} \]
There are two main types of adsorption:
• Physisorption (weak van der Waals forces)
• Chemisorption (strong chemical bonding) ---
Step 1: Compare properties
• Force of attraction → Different
• Enthalpy → Different (low vs high)
• Temperature effect → Opposite behavior
• Surface area → SAME effect
• Layers → Different (mono vs multi) ---
Step 2: Explanation of correct option
Both adsorption types:
• Increase with increase in surface area
• More surface → more adsorption sites --- Final Answer: \[ \boxed{\text{Effect of surface area}} \]
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