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Compreshension -I The experimental val...

Compreshension -I
The experimental values of colligative properties of many solutes in solution resembles calculated value of colligative properties.
However in same cases, the experimental value of colligative property differ widely than those obtained by calculation. Such experimental values of colligative properties are known as Abnormal values of colligative properties are :
(i) Dissociation of solute : It increases the colligative properties.
(ii) Association of solute : It decreases the colligative properties
e.g. : Dimerisation of acetic acid in benzene
If degree of dissociation of an electrolyte `A_(2)B_(3)` is 25% in a solvent, then

A

Normal boiling point =Experimental boiling point

B

Normal freezing point `gt` Experimental freezing point

C

Normal osmotic pressure`=(1)/(2)` Experimental osmotic pressure

D

Normal molecular weight `=(1)/(4)` Experimental molecular weight

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  • Compreshension -I The experimental values of colligative properties of many solutes in solution resembles calculated value of colligative properties. However in same cases, the experimental value of colligative property differ widely than those obtained by calculation. Such experimental values of colligative properties are known as Abnormal values of colligative properties are : (i) Dissociation of solute : It increases the colligative properties. (ii) Association of solute : It decreases the colligative properties e.g. : Dimerisation of acetic acid in benzene One mole I_(2) (solid) is added in 1 M, 1 litre Kl solution . Then

    A
    Osmostic pressure of solution increases
    B
    Freezing point of solution increases
    C
    Relative lowering in vapour pressure decreases
    D
    No change in boiling point of solution

  • Compreshension -I The experimental values of colligative properties of many solutes in solution resembles calculated value of colligative properties. However in same cases, the experimental value of colligative property differ widely than those obtained by calculation. Such experimental values of colligative properties are known as Abnormal values of colligative properties are : (i) Dissociation of solute : It increases the colligative properties. (ii) Association of solute : It decreases the colligative properties e.g. : Dimerisation of acetic acid in benzene 4 different 100 ml solutions are prepared by mixing 1 gram each of NaCl (NH_(2))_(2)CO.Na_(2)SO_(4) and K_(4)[Fe(CN)_(6)] at temperature T. Correct order of osmotic pressure is

    A
    `(NH_(2))_(2)CO` solution `gt` NaCl solution `gt Na_(2)SO_(4)` solution `gt K_(4)[Fe(CN)_(6)]` solution
    B
    NaCl solution `gt Na_(2)SO_(4)` solution `gt (NH_(2))_(2)CO` solution `gt K_(4)[Fe(CN)_(6)]` solution
    C
    `K_(4)[Fe(CN)_(6)]` solution `gt Na_(2)SO_(4)` solution `gt `NaCl solution `gt (NH_(2))_(2)CO` solution
    D
    `Na_(2)SO_(4)` solution `gt (NH_(2))_(2)CO` solution `gt `NaCl solution `gt K_(4)[Fe(CN)_(6)]` solution

  • The exprimental values of colligative properties of many solute in solution resemble calculatede value of colligative properties. However in same cases, the expermental value of colligative property differ widely form those obtained by calculation. Such experimental values of colligative properties are known as abnormal values of colligative propertiy. Cause for abnormal values of colligative properties are : Dessiation of solute : It increases the colligative properties. Association of solute : It decreases the colligative properties. Choose the correct answer. If degree of dissociation of an electrolyte, A_(2)B_(3) "is" 25% in a solvent, then

    A
    Normal boiling point = Expermental boiling point.
    B
    Normal freezing point `gt` Experimental freezing point
    C
    Normal osmotic pressure = 1/2 Experimantal osmotic pressure
    D
    Normal molecular mass = 1/4 Exprimental molecular mass

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    Colligative property.

    The exprimental values of colligative properties of many solute in solution resemble calculatede value of colligative properties. However in same cases, the expermental value of colligative property differ widely form those obtained by calculation. Such experimental values of colligative properties are known as abnormal values of colligative propertiy. Cause for abnormal values of colligative properties are : Dessiation of solute : It increases the colligative properties. Association of solute : It decreases the colligative properties. Choose the correct answer. If degree of dissociation of an electrolyte, A_(2)B_(3) "is" 25% in a solvent, then

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