Which one of the following statement(s) is/are correct?

Brownian movement is more pronounced for smaller particles than for bigger ones.

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Sols of metal sulphides are lyophilic.

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According to the Schulze-Hardy law, the bigger the size of the ion, the greater is its coagulating power.

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One would expect charcoal to adsorb chlorine more strongly than hydrogen sulphide.

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Solution

The correct option is A Brownian movement is more pronounced for smaller particles than for bigger ones.
As the size of the particle increases, the effect of the impact average out and the Brownian movement becomes slow. Ultimately, when the dispersed particle becomes big enough to acquire the dimension of suspension, no Brownian movement is observed.

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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

10 %

[A g I] I^{-}

[A g I] I^{-}

A g N O_{3}, P b (N O_{3})_{2}

F e (N O_{3})_{3}

A l^{3 +} > B a^{2 +} > N a^{+}

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