Verified Solution • 2025–26 Session
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QJEEM20Ch906b: JEE Main 2020 Chemistry - Class 12 JEEM20Ch906b Solution: Amongst the following statements regarding adsorption, those…
Amongst the following statements regarding adsorption, those that are valid are
(a) H becomes less negative as adsorption proceeds
(b) On a given adsorbent, ammonia is adsorbed more than nitrogen gas
(c) On adsorption, the residual force acting along the surface of the adsorbent increases
(d) With increase in temperature, the equilibrium concentration of adsorbate increases
(a) H becomes less negative as adsorption proceeds
(b) On a given adsorbent, ammonia is adsorbed more than nitrogen gas
(c) On adsorption, the residual force acting along the surface of the adsorbent increases
(d) With increase in temperature, the equilibrium concentration of adsorbate increases
Multiple Choice Options
- A (c) and (d)
- B (a) and (b)
- C (d) and (a)
- D (b) and (c)
Step-by-Step Verified Solution
(a) Since adsorption is exothermic process, as adsorption proceeds number of active sites present over adsorbent decreases, so less heat is evolved.
(b) Since NH3 has higher force of attraction on adsorbent due to its polar nature.
(c) As the adsorption increases, residual forces over surface decreases.
(d) Since process is exothermic, on increasing temperature it shift to backward direction, so concentration of adsorbate particle decreases.
(b) Since NH3 has higher force of attraction on adsorbent due to its polar nature.
(c) As the adsorption increases, residual forces over surface decreases.
(d) Since process is exothermic, on increasing temperature it shift to backward direction, so concentration of adsorbate particle decreases.