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Introduction

The normal bo...

Question

The normal boiling point of a liquid is that temperature at which vapour pressure of the liquid is equal to:

A

zero

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B

380 mm of Hg

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C

760 mm of Hg

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D

100 mm of Hg

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Solution

The correct option is C 760 mm of Hg
Normal boiling point of a liquid is that temperature at which vapour pressure of the liquid is equal to atmoshpheric pressure which is normally 760 mm of Hg.

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Similar questions

Q. At a particular temperature if vapour pressure of pure liquid A is

100 m m H g

and that of pure liquid B is

300 m m H g

.
Then choose the correct option:

80^{o}

C, the vapour pressure of pure liquid

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250

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and that of pure liquid

B

1000

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. If a solution of

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B

80^{o}

1

atm pressure, the amount of

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1

= 760

80^{\circ} C

the vapour pressure of pure liquid A is 250 mm of Hg and that of pure liquid B is 1000 mm of Hg. If a solution of A and B boils at

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Q. The vapour pressure of pure liquids 1 and 2 are

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700 m m H g

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At $80^{\circ}$ C the vapour pressure of pure liquid ‘A’ is 520 mm Hg and that of pure liq ‘B’ is 1000 mm Hg. If a mixture of both the liquids form an ideal solution which boils at $80^{\circ} C$ and 1 atm pressure, the mole fraction of ‘A’ in the liquid mixture is:

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