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The coagulating power of electrolytes ha...

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

A

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

B

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

C

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

D

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

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The correct Answer is:
B
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The coagulating power of electrolytes having ions Na^(+),Al^(3+) and Ba^(2+) for aresenic sulphide sol increases in the order :-

The coagulation power of an electrolyte for As_(2) S_(3) decreases in the order:

The coagulating power of ions, for a negative sol changes in the order

Statement- 1: In the coagulation of negatively charged arsenic sulphide sol, the coagulating power decreases in the order Al^(3+) gt Ba^(2+) gt Na^(+) . Statement- 2: Generally greater the valency of coagulating ion, the greater is its power of coagulation.

Statement-1: In the coagulation of negatively charged arsenic sulphide sol, the coagulating power decreases in the order, Al^3gtBa^(2+)gtNa^+ Statement-2 : Generally greater the valence of coagulating ion, the greater is its power of coagulation.

Assertion : In the coagulation of a negative sol the flocculating power is in the order : Al^(3+) gt Ba^(2+) gt Na^(+) Reason : Greater the valence of the flocculating ion added, greater is its power to cause precipitation.

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