Q. 14 B5.0( 2 Votes )

Out of and which one is more effective in causing coagulation of negatively charged sol and why?

Answer :

According to the Schulze-Hardy rule, the effectiveness of the salt causing flocculation depends on the charge of the ion of opposite sign to the charge of the sol particles. The greater the magnitude of the opposite charge, the higher the ability of the salt to coagulate the sol. Thus, AlCl3 is more effective in causing the coagulation of a negatively charged sol than divalent salt MgCl2.

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