Which law is represented by the following expression?

For a positive colloid the order of precipitation is : Phosphate ion>sulphate ion >chloride ion.

Hardy Schulze

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Tyndal

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Electrical movement

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Brownian

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Solution

The correct option is A
Hardy Schulze

Ions carrying opposite charge are effective in coagulation of solution and the coagulating power is directly proportional to the valency of the ion.

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Similar questions

Which one of the following statements is correct :

i) Brownian movement is more pronounced for smaller particles than for bigger ones

ii) Sols of metal sulphides are lyophilic

iii) Schulze-Hardey law states, the bigger the size of the ion, the greater is its coagulating power

iv) One would be expect charcoal to adsorb chlorine more strongly hydrogen sulphide

H C l

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