NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>Follow Up Problems>Q 36

HARD

12th West Bengal Board

IMPORTANT

Earn 100

$3.100 g$ of ${BaCl}_{2}$ in $250 g$ of water boils at $100.83 ° C .$ Calculate the value of van't Hoff factor and molality of ${BaCl}_{2}$ in this solution. ( $K_{b}$ for water $= 0.52 K m^{- 1},$ molar mass of ${BaCl}_{2} = 208.3 g {mol}^{- 1}$ ).

Important Questions on Solutions

HARD

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>Follow Up Problems>Q 37

0.01 m

aqueous solution of

K_{3} [Fe {(CN)}_{6}]

freezes at

- 0.062 ° C .

What is the apparent percentage of dissociation ? (

K_{f}

for water

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

)

EASY

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 1

When a solute is dissolved in a solvent, the vapour pressure of the solution_____.

MEDIUM

12th West Bengal Board

IMPORTANT

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

If the vapour pressure at a particular composition of two liquids is the lowest, then its boiling point must be _____.

MEDIUM

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 4

The osmotic pressure

(π)

of a solution

= CR \times

_____.

MEDIUM

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 5

The freezing point of

1 m NaCl

solution assuming

NaCl

to be

100 %

ionised in water is_____

° C

. (Upto two decimal point)

MEDIUM

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 6

The molal freezing point depression constant is the depression in freezing point for _____ molal solution.(

1 / 2

)

MEDIUM

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 7

The sum total of the mole fractions of the components of the solution is equal to_____.

HARD

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 8

A solution obtained by dissolving

342 g

of sugar

(C_{12} H_{22} O_{11})

in

1000 g

water is_____molal.