Questions
Which of the following statements is true about AgI sol prepared by peptization of AgI with KI.
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By Expert Faculty of Sri Chaitanya
a
In electrophoresis, the dispersed phase will move towards cathode.
b
NaCl is more effective than A12(SO4)3 for bringing about coagulation of sol.
c
On addition of NaCl in sol, the solution is stabilised
d
On persistent dialysis of sol, precipitation of colloidal sol take place (coagulation).
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Correct option is D
In presence of KI,, AgI is a negative colloidal sol. Because it adsorbs I- ion on it's surface
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