1.

Which of the followng electrolytes will have maximum coagulating value for AgI//Ag^(+)sol?

Answer»

`Na_(2)SO_(4)`
`Na_(3)PO_(4)`
`Na_(2)SO_(4)`
`NaCl`

Solution :`AgI|Ag^(+)` is positively CHARGED SOL. Electrolyte whose negative ion (anion) has least negative charge will require maximum amount and hence willhave maximum coagulationg VLAUE. Hence, `Cl^(-)` (i.e., NaCl) will have maximum COAGULATING value (coagulating power will be maximum for `PO_(4)^(3-),i.e., Na_(3)PO_(4).`


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