'Greater the valency, the higher is the coagulating power of ion'. This rule was introduced by:
A
Hardy-Schulze
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B
Graham
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C
Kossel and Lewis
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D
Faraday
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Solution
The correct option is A Hardy-Schulze According to Hardy-Schulze rule 'Greater is the valency of the oppositely charged ion of the electrolyte being added, the faster is the coagulation'.