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12th ICSE

IMPORTANT

Earn 100

Benzene $(C_{6} H_{6})$ and toluene $(C_{6} H_{5} {CH}_{3})$ form an ideal solution. At $313 K$ , the vapour pressures of pure benzene and toluene are $160 mm Hg$ and $60 mm Hg$ respectively. Calculate the partial pressures of benzene and toluene, and the total pressure of the solution when equal masses of benzene and toluene are mixed at $313 K$ .

Important Questions on Solutions

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.34

Benzene

(C_{6} H_{6})

and toluene

(C_{6} H_{5} {CH}_{3})

form an ideal solution. At

313 K

, the vapour pressures of pure benzene and toluene are

160 mm Hg

and

60 mm Hg

respectively. Calculate the partial pressures of benzene and toluene, and the total pressure of the solution when equal moles of benzene and toluene are mixed at

313 K

HARD

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.34

Benzene

(C_{6} H_{6})

and toluene

(C_{6} H_{5} {CH}_{3})

form an ideal solution. At

313 K

, the vapour pressures of pure benzene and toluene are

160 mm Hg

and

60 mm Hg

respectively. Calculate the partial pressures.of benzene and toluene, and the total pressure of the solution when

1

mole of benzene and

4

moles of toluene are mixed at

313 K

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.35

Methanol and ethanol form a nearly ideal solution at

300 K

. A solution is made by mixing

32 g

of methanol and

23 g

of ethanol at

300 K

. Calculate the partial pressures of its constituents and the total pressure of the solution

(At 300 K, p^{0} = 90 mm Hg, p^{0} C_{2} H_{5} OH = 51 mm Hg)

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.36

The vapour pressures of benzene and toluene at

20 ° C

are

75 mm

and

22 mm Hg

respectively.

23.4 g

of benzene and

64.4 g

of toluene are mixed. If the two form an ideal solution, calculate the mole fraction of benzene in vapour phase when vapours are in equilibrium with the liquid phase.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.37

25 ° C

, the vapour pressure of water is

23.75 mm Hg

. Calculate the vapour pressure at the same temperature of

5 %

aqueous solution of urea

({NH}_{2} {CONH}_{2})

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.38

The vapour pressure of water at

20 ° C

17 mm Hg

. Calculate the vapour pressure of a solution containing

6 g

of glucose in

50 g

of water.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.39

A solution of two liquids $A$ and $B$ , obeys Raoult's law. At a certain temperature, it is found that when the total pressure above the given solution is $400 mm Hg$ , the mole fraction of $A$ in vapour phase is $0.45$ and that in the liquid is $0.65,$ what are vapour pressures of the two liquids?

[Note # Question is edited as given in the book]

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.4

What are colligative properties? Explain two of them.

Important Questions on Solutions

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