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The coagulating power of an electrolyte ...

The coagulating power of an electrolyte for arsenious súlphide sol dećreases in the order : `Na^+gtAl^(3+) gtB a^(2+)`, `PO_4^(3-)gtSO_4^(2-)gtCl^-`, `Cl^-gtSO_4^(2-)gtPo_4^(3-)`, `Al^(3+)gtBa^(2+)gtNa^+`

A

`Ba^(2+) lt Na^(+) lt Al^(3+)`

B

`Al^(3+) lt Na^(+) lt Ba^(2+)`

C

`Al^(3+) lt Ba^(2+) lt Na^(+)`

D

`Na^(+) lt Ba^(2+) lt Al^(3+)`

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