NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 10

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Earn 100

What is the van't Hoff factor when benzene vapour pressure falls from $165 mm$ to $162 mm$ on addition of $6 g$ of ${CH}_{3} COOH$ to $3$ moles of benzene?

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Important Questions on Solutions

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12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 11

Colligative properties of the solutions are those properties which depend on the

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12th West Bengal Board

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NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 12

2.5

litre of

1 M NaOH

solution is mixed with

3.0

litre of

0.5 NaOH

solution. The molarity of the resulting solution is

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NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 13

Each constituent of a binary liquid solution of $A$ and $B$ will obey Raoult's law when

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NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 14

Which of the following statement is true?

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NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 15

Which is not affected by temperature?

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NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 16

A

5 %

solution of cane sugar (mol. wt.

= 342

) is isotonic with

1 %

solution of substance

X .

The molecular weight of

X

is

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12th West Bengal Board

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NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 17

The vapour pressure of a solvent decreases by

10 mm

of mercury when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is

0.2 .

What should be the mole fraction of the solvent if the decrease in vapour pressure is to be

20 mm

of mercury?

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12th West Bengal Board

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NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 18

An aqueous solution freezes at

- 0.186 ° C (K_{f} = 1.86 °; K_{b} = 0.512 °) .

What is the elevation in boiling point?