A) Acetic acid solution in contact with animal charcoal.
B) Dilute KQ solution in contact with blood charcoal.
C) Concentration KCI solution in contact with blood charcoal.
D) \[{{H}_{2}}\]gas in contact with charcoal at 300 K.
Correct Answer: B
Solution :
When the concentration of the adsorbate is less on the surface relative to its concentration in the bulk it is called negative adsorption. Add from left in this adsorption, concentration of dilute KCl solution is less on the surface of blood charcoal relative to its concentration in solution.
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