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The coagulating powers of electrolytes h...

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

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
B
The larger the charge, larger the coagulating power. Thus the order is `NaA^(+ )lt Ba^(2+) lt Al^(3+)` .
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