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The coagulating power of electrolytes ha...

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

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

According to Hardy Schulze rule, greater the charge on oppositely charged ion, greater is its coagulating power. Since arsenic sulphide is a negatively charged sol, thus, the order of coagulating power is `Na^(2+)B^2`
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