Discussion Forum



1)

Which  one of the following is a case of negative  adsorption?


A) Acetic acid solution in contact with animal charcoal

B) Dilute KCl solution in contact with blood charcoal

C) Concentration KCl solution is contact with blood charcoal

D) $H_{2}$ gas in contact with charcoal at 300 K

Answer:

Option B

Explanation:

 When the concentration  of the adsorbate is less on the surface as compare to its concentration in the bulk is called negative adsorption. Add from left in this adsorption, the concentration of dilute  KCl solution is less o the surface of blood charcoal as compare to its concentration in solution