Intermediate Second Year Chemistry>Chapter 2 - Solutions>Questions>Q 32

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12th Andhra Pradesh Board

IMPORTANT

Earn 100

What is meant by negative deviation from Raoult's law and how is the sign of $∆_{mix} H$ related to negative deviation from Raoult's law?

Important Questions on Solutions

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Chemistry>Chapter 2 - Solutions>Questions>Q 33

The vapour pressure of water is $12.3 k Pa$ at $300 K$ . Calculate vapour pressure of $1$ molal solution of a non-volatile solute in it.

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Chemistry>Chapter 2 - Solutions>Questions>Q 34

Calculate the mass of a non-volatile solute

(molar mass 40 g {mol}^{- 1})

which should be dissolved in

114 g

octane to reduce its vapour pressure to

80 %

.

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Chemistry>Chapter 2 - Solutions>Questions>Q 35

A

5 %

solution (by mass) of cane sugar in water has freezing point of

271 K

. Calculate the freezing point of

5 %

glucose in water if freezing point of pure water is

273.15 K

.

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Chemistry>Chapter 2 - Solutions>Questions>Q 36

If the osmotic pressure of glucose solution is

1.52 bar

at

300 K

. What would be its concentration if

R = 0.083 L bar {mol}^{- 1} K^{- 1}

?

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Chemistry>Chapter 2 - Solutions>Questions>Q 37

Vapour pressure of water at

293 K

is

17.535 mm Hg

. Calculate the vapour pressure of water at

293 K

when

25 g

of glucose is dissolved in

450 g

of water.

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Chemistry>Chapter 2 - Solutions>Questions>Q 38

How is molar mass related to the elevation in boiling point of a solution?

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Chemistry>Chapter 2 - Solutions>Questions>Q 39

What is an ideal solution?

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Chemistry>Chapter 2 - Solutions>Questions>Q 40

What is relative lowering of vapour pressure? How is it useful to determine the molar mass of a solute?