Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 59

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The vapour pressure of pure liquid $' A'$ at $310 ° C$ is $120$ torr. The vapour pressure of this liquid in solution with liquid $B$ is $72$ torr. Calculate the mole fraction of $' A'$ in solution if the mixture obeys Raoult's law.

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Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 60

The vapour pressure of pure benzene and toluene are

160

and

60

torr respectively. The mole fraction of toluene in vapour phase in cotanct with equimolar solution of benzene and toluene is

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Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 62

Which one of the following is the incorrect form of Raoult's law?

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Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 63

The vapour pressure of a dilute aqueous solution of Glucose is

750 mm

of mercury at

373 K .

The mole fraction of solute is -

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Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 64

The vapour pressure of water at room temperature is $23.8 mm$ of $Hg .$ The vapour pressure of an aqueous solution of sucrose with mole fraction $0.1$ is equal to:

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Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 65

Relative lowering in vapour pressure of a solution containing

1

mole

K_{2} {SO}_{4}

in

54 g H_{2} O

is:

(K_{2} {SO}_{4}

is

100 %

ionised)

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Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 66

What weight of solute (molecular weight

= 60

) is required to dissolve in

180 g

of water to reduce the vapour pressure

\frac{4}{5} th

of pure water?

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Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 67

18 glucose

(C_{6} H_{12} O_{6})

is added to 178.2 g water. The vapour pressure of water (in torr) for this aqueous solution at 273 K is

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Alpha Question Bank for Medical: Chemistry>Chapter 8 - Solutions>Exercise 1>Q 68

The mass of glucose that should be dissolved in

100 g

of water in order to produce same lowering of vapour pressure as is produced by dissolving

1 g

of urea (molecular mass

= 60

) in

50 g

of water is: