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Colour of Colloids

The colligati...

Question

The colligative properties of a colloidal solution compared to the solution of non-electrolyte of same concentration will be:

A

same

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B

higher

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C

lower

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D

higher or lower

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Solution

The correct option is A lower
The colligative properties of a colloidal solution compared to the solution of non-electrolyte of same concentration will be lower as the colloidal solutions are stable due to the presence of charge particle ans also sometimes coagulation happens which reduces the number of particles in the solution and hencem the colligative property.

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Q. Assertion :The values of colligative properties are of smaller order as compared to values shown by true solutions at same concentrations. Reason: Colloidal particles show Brownian movement.

Q. Colligative properties of colloidal sols of same compound are very low in comparison to their true solutions of same concentration because

Q. Substances which behave as normal electrolytes in solution at low concentration and exhibit colloidal properties at higher concentration are called:

Q. The magnitude of colligative properties in all colloidal dispersions is_____than solution.

Q. The experimental values of colligative properties of many solutes in solution resembles calculated values of colligative properties.
However in some cases, the experimental values of colligative properties differ widely than those obtained by calculations. Such experimental values of colligative properties are known as abnormal values of colligative properties. The causes for abnormal values of colligative properties are:
(i) Dissociation of solute: It increases the colligative properties.
e.g.: Dissociation of

KCl, NaCl

H_{2} O

.
(ii) Association of solute: It decreases the colligative properties.
e.g.: Dimerisation of acetic acid in benzene.

If the degree of dissociation of an electrolyte

A_{2} B_{3}

is 25% in a solvent, then:

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