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At isoelectric point the colloidal particles

$\begin{array}{1 1} (a)\text{ migrate towards appositely charged electrodes.} \\ (b) \text{coagulates & becomes electrically neutral .} \\ (c)\text{becomes basic} \\ (d) \text{pH of the solution becomes 7} \end{array}$
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Answer : coagulates & becomes electrically neutral .
Explanation :
At isoelectric point , colloidal particles do net migrate towards oppositely charged electrodes as at isoelectric pH , colloidal particles do net carry any charge . The pH at isoelectric point is net 7 .
answered Mar 19, 2014 by yamini.v

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