ICSE Chemistry>Chapter 2 - Solutions>ESSAY (LONG ANSWER) TYPE QUESTIONS>Q 31

MEDIUM

12th ICSE

IMPORTANT

Earn 100

The molecular weights of sodium chloride and glucose are determined by the depression of freezing point method. Compared to their theoretical molecular weights, what will be their observed molecular weights when determined by the above method? Justify your answer.

Important Questions on Solutions

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>ESSAY (LONG ANSWER) TYPE QUESTIONS>Q 31

An aqueous solution containing

1.70 g

of cane sugar in

100 mL

water begins to freeze at

- 0.093 ° C

. The cryoscopic constant (molal depression constant) of water is

1.86 K kg {mol}^{- 1}

. Calculate the molecular weight of cane sugar.

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>ESSAY (LONG ANSWER) TYPE QUESTIONS>Q 31

A decimolar solution of sodium chloride exerts an osmotic pressure of

4.82

atmosphere at

27 ° C

. Calculate the degree of dissociation of sodium chloride.

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 1

An electrolyte dissolves in water when

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12th ICSE

IMPORTANT

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

An azeotropic mixture of two liquids boils at a lower temperature than either of them when

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 3

Which of the following solution pairs can be separated by fractional distillation?

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 4

If

18 g

of glucose are present in

1000 g

of solvent, the solution is said to be to

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12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 5

Mole fraction of

C_{3} H_{5} {(OH)}_{3}

in a solution of

36 g

of water and

46 g

of glycerine is

MEDIUM

12th ICSE

IMPORTANT

ICSE Chemistry>Chapter 2 - Solutions>OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTONS>Q 6

1000 g

aqueous solution of

{CaCO}_{3}

contain

10 g

of calcium carbonate. Concentration of solution is