1.

The coagulating power of clcctrolytcs having inos Na ^(+), Al ^(3+) and Ba ^(2+) for arsenic culphide sol increase in the order :

Answer»

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

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