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In the preparation of AgI sol, the excess of $AgNO_3$ is added to potassium iodide solution. The particles of the sol will acquire

(a) negative charge

(b) positive exharge

(c) no charge

(d) unpredictable

1 Answer

Answer: positive charge
 
AgI colloidal particles adsorb common ion $Ag^+$ from excess $AgNO_3$ solution and acquires positive charge.

 

answered Dec 14, 2013 by mosymeow_1
 

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