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Cryoscopic constant of a liquid is:...

Cryoscopic constant of a liquid is:

A

Decrease in freezing point when 1 gram of solute is dissolved per kg of the solvent

B

Decrease in the freezing point when 1 mole of solute is dissolved per kg of the solvent

C

Is the elevation for 1 molar solvent

D

Is a factor used for calculation of elevation in boiling point

Text Solution

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The correct Answer is:
B
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The cryoscopic constant of water is 1.86 K "mol"^(-1) kg. An aqueous solution of cane sugar freezes at -0.372^(@)C . Calculate the molality of the solution.

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Knowledge Check

  • Depression of freezing point of which of the following solutions does represent the cryoscopic constant of water ?

    A
    6% by mass of urea in aqueous solution
    B
    100 g of aqueous solution containing 18 g of glucose
    C
    59 g of aqueous solution containing 9 of glucose
    D
    1 M KCI solution in water

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    The cryoscopic contant of water is 1.86 K kg mol^(-1) . A 0.01 molal acetic acid solution produces a depression of 0.0194^(@)C in the freezing point. The degree of dissociation of acetic acid is :

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