A colloid prepared by the addition of Kl to AgNO3 solution is purified using
dialysis. Find the minimum mass in grams of an electrolyte AB' (GMM -
60) required to completely coagulate 18 of the aforementioned colloid
Given :
Active ion Flocculation
causing value(mmole/e)
flocculation
A 50
B 100
Answers
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HEYA MATE YOUR ANSWER IS
In order to form a negatively charged colloidal sol on adding AgNO
3
solution into KI solution, KI should be in excess.
Among all options, KI is in excess in option B as shown:
50 mL of 0.1 M AgNO
3
+ 40 mL of 0.1 M KCl
m moles of AgNO
3
=50×0.1=5
m moles of KI=50×0.2=10
KI is in excess
So, I
−
is adsorbed on AgI sol
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