Surface ChemistryEasy
Question
The coagulating power of electrolytes having ions Na+, Al3+ and Ba2+ for aresenic sulphide sol increases in the order :-
Options
A.Al3+ < Ba2+ < Na+
B.Na+ < Ba2+ < Al3+
C.Ba2+ < Na+ < Al3+
D.Al3+ < Na+ < Ba2+
Solution
∴ As2S3 is -ive sol.
& According Hardy-Schulze rule
coagulation power is proportional to valency of active ion
∴ Al+3 > Ba+2 > Na+
& According Hardy-Schulze rule
coagulation power is proportional to valency of active ion
∴ Al+3 > Ba+2 > Na+
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