1.

The coagulating power of an electrolyte for Aresenious sulphide sol decreases in the order

Answer»

`Na^(+)gtAl^(3+)gtBa^(2+)`
`PO_(4)^(3-)gtSO_(4)^(2-)GTCL^(-)`
`CL^(-)gtSO_(4)^(2-)gtPO_(4)^(3-)`
`Al^(3+)gtBe^(2+)gtNa^(+)`

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