1.

The coagulating power of electrolytes having ions Na^(+), Al^(3+) and Ba^(2+) for arsenic sulphide sol increases in the order :

Answer»

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

Solution :`NA^(+) lt Ba^(2+) lt Al6(3+)`


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