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Standard XII
Chemistry
Colligative Properties
What are coll...
Question
What are colligative properties
?
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Solution
In chemistry, colligative properties are properties of solutions that depend on the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the type of chemical species present.
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Colligative properties
Q.
Colligative properties are applicable to:
Q.
The colligative properties of a solution are
Q.
The total number of colligative properties are:
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
etc. in
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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