Hardy-Schulze law states that:

higher the charge of the coagulating ions, greater its coagulating power, having opposite sign of solution

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solution must have zero gold number

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disperse phase and dispersion medium must be of the same sign

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micelles coagulate in the presence of surfactants

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Solution

The correct option is A higher the charge of the coagulating ions, greater its coagulating power, having opposite sign of solution
Hardy-Schulze law states that higher the charge of the coagulating ions, greater its coagulating power, having opposite sign of solution.

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Which one of the following statements is correct :

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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

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