. The solubility of AgCl will be minimum in


(a) 0.01MCaCl2

(b) pure water

(c) 0.001MAgNO3

(d) 0.01MNaCl

Best Answer

Correct Option is (a) 

The solubility of insoluble substances can be decreased by the presence of a

common ion.

Present in silver chloride are silver ions ( Ag+) and chloride ions (Cl-).AgCl is

not soluble in water.

Silver nitrate (which is soluble) has silver ion in common with silver chloride.

But the concentration of the common ion is low (o.oo1M)

Calcium chloride (also soluble) has chloride ion in common with silver

chloride. In CaCl  2 has two moles of common ion (o.02M) that decreases

solubility very rapidly.

In Na2SO4 there is no common ion effect apply therefore it is soluble in it.

 

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