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12th ICSE

IMPORTANT

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$18 g$ of glucose $(C_{6} H_{12} O_{6})$ is added to $178.2 g$ of water. The vapour pressure of water for this aqueous solution at $100 ° C$ is

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Important Questions on Solutions

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 47

5.25 %

solution of a substance is isotonic with a

1.5 %

solution of urea (molar mass=

60 g {mol}^{- 1}

) in the same solvent. If the densities of both the solutions are assumed to be equal to

1.0 g {cm}^{- 3}

, molar mass of the substance will be

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12th ICSE

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ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 48

A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of

290 mm

300 K

. The vapour pressure of propyl alcohol is

200 mm

. If the mole fraction of ethyl alcohol is

0.6

, its vapour pressure (in mm) at the same temperature will be

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 49

80 ° C

, the vapour pressure pf pure liquid 'A' is

520 mm

Hg and that of pure liquid 'B' is

1000 mm

Hg. If a mixture solution of 'A' and 'B' boils at

80 ° C

and

1 atm

pressure, the amount of 'A' in mixture is (

1 atm = 760 mm Hg

)

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 50

The vapour pressure of water at

20 ° C

17.5 mm

Hg. If

18 g

of glucose

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

is added to

178.2 g

of water at

20 ° C

, the vapour pressure of the resulting solution will be

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 51

An aqueous solution is

1.00

molal in KI. which change will cause the vapour pressure of the solution to increase?

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12th ICSE

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ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 52

A solution of sucrose (molar mass

= 342 g {mol}^{- 1}

) has been prepared by dissolving

68.5 g

of sucrose in

1000 g

of water. The freezing point of the solution obtained will be (

k_{f}

for water

= 1.86 K kg {mol}^{- 1}

)

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 53

The freezing point depression constant for water is

- 1.86 ° C m^{_{- 1}}

. If

5.00 g {Na}_{2} {SO}_{4}

is dissolved in

45.0 g H_{2} O

, the freezing point is changed by

- 3.82 ° C

. Calculate the van't Hoff factor for

{Na}_{2} {SO}_{4}

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 54

p_{A}

and

p_{B}

are the vapour pressure of pure liquid components, A and B, respectively of an ideal binary solution. If

χ_{A}

represents the mole fraction of component A, the total pressure of the solution will be

18g of glucose C6H12O6 is added to 178.2g of water. The vapour pressure of water for this aqueous solution at 100°C is

Important Questions on Solutions

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$18 g$ of glucose $(C_{6} H_{12} O_{6})$ is added to $178.2 g$ of water. The vapour pressure of water for this aqueous solution at $100 ° C$ is