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Liquids in Liquids

14. the lower...

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14. the lowering of vapour pressure of 0.1M aqueous solutions of NaCl , K2SO4 and CuSO4 are a) all equal b) in the ratio of 1:1:1.5

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Q. Which one of the following is the ratio of the lowering of vapour pressure of 0.1 M aqueous solutions of

B a C l_{2}, N a C l

A l_{2} (S O_{4})_{3}

Q. The ratio of lowering of vapour pressure of

0.1 M

aqueous solutions of

K C l, C u S O_{4} a n d C a F_{2}

is:
Assume 100% ionisation

Q. The ratio of lowering of vapour pressure of

0.1 M

aqueous solutions of

K C l

C u S O_{4}

N a_{2} S O_{4}

Q. The depression in freezing point of 0.1 M aqueous solutions of

H C l

C u S O_{4}

K_{2} S O_{4}

are in the ratio:

Q. Consider the following statements and arrange in the order of true/false as given in the codes.

S_{1} :

The lowering of vapour pressure of a solvent is equal to mole fraction of the solute.

S_{2}

: Van't Hoff factor

= \frac{Normal Colligative Property}{Observed Colligative Property}

.

S_{3}

: 0.1 M aqueous

N a C l

& 0.1 M aqueous sugar solutions are isotonic.

S_{4}

: Vapour pressure of a solvent decreases with decreasing temperature.

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