Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 53

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The dissolving process is exothermic when

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 54

Which of the following is less than zero for ideal solutions?

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 56

The degree of dissociation of an electrolyte is a and its van’t Hoff factor is i. The number of ions obtained by complete dissociation of 1 molecule of the electrolyte is :

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 59

If

P_{0}

and

P

are the vapour pressures of a solvent and its solution, respectively, and

N_{1}

and

N_{2}

are the mole fractions of the solvent and non-volatile solute, respectively, then the correct relation is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 61

The vapour pressure of pure benzene,

C_{6} H_{6}

at

50 ° C

is

268 Torr

. How many moles of non-volatile solute per mol of benzene is required to prepare a solution of benzene having a vapour pressure of

167 Torr

at

50 ° C

?

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 62

If relative decrease in vapour pressure is

0.4

for a solution containing

1 mol

NaCl

in

3 mol H_{2} O, NaCl

is _____

%

ionised.

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 64

Relative decrease in vapor pressure of an aqueous solution containing

2 moles [Cu {({NH}_{3})}_{3} Cl] Cl

in

3 moles H_{2} O

is

0.50

. On reaction with

{AgNO}_{3}

, this solution will form (Assuming no change in degree of ionization of substance on adding

{AgNO}_{3}

)

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 65

An aqueous solution containing

1 g

of urea boils at

100.25 ° C

. The aqueous solution containing

3 g

of glucose in the same volume will boil at

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 66

Elevation in boiling point was

0.52 ° C

when

6 g

of a compound

X

was dissolved in

100 g

of water. Molecular weight of

X

is

(K_{b} = 0.52 kg {mol}^{- 1})