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Which of the following electrolytes will...

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

A

`Na_(2)S`

B

`Na_(3)PO_(4)`

C

`Na_(2)SO_(4)`

D

NaCl

Text Solution

Verified by Experts

The correct Answer is:
B
According to Hardy-Schuize law, greater the charge on anion greater will be its coagulating power.
`{:("Electrolytes","Anionic part","Charge on anion"),(Na_(2)S," "S^(2-)," "2),(Na_(3)PO_(4)," "PO_(4)^(3-)," "3),(Na_(2)SO_(4)," "SO_(4)^(2-)," "2),(NaCl," "Cl^(-)," "1):}`
Here,`PO_(4)^(3-)` have highest charge. Hence, `PO_(3)^(4)` have highest coagulating power.
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