Choose the correct statement with respect to the vapour pressure of a liquid among the following :

Increases non-linearly with increasing temperature

Decreases non-linearly with increasing temperature

Decreases linearly with increasing temperature

Increases linearly with increasing temperature

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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

3 moles H_{2} O

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

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

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 67

A solute

S

undergoes a reversible trimerization, when dissolved in a certain solvent. The boiling point elevation of its

0.1 molal

solution was found to be identical to the boiling point elevation in case of a

0.08 molal

solution of a solute which neither undergoes association nor dissociation. To what percent had the solute

‘ S ’

undergone trimerization?

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 68

A complex of iron and cyanide ions is

100 %

ionised at

1 m

(molal). If its elevation in the boiling point is

2.08

. Then, the complex is

(K_{b} = 0.52 ° C {mol}^{- 1} kg)

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 69

${PtCl}_{4} \cdot 6 H_{2} O$ can exist as a hydrated complex. $1 molal$ aqueous solution has a depression in freezing point of $3.72 ° C$ . Assume, $100 %$ ionization and $K_{f} (H_{2} O) = 1.86 K {mol}^{- 1} kg$ . Then the complex is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 70

How many moles of sucrose should be dissolved in

500 g

of water so as to get a solution which has a difference of

104 ° C

between boiling point and freezing point.

(K_{f} = 1.86 K Kg {mol}^{- 1}, K_{b} = 0.52 K Kg {mol}^{- 1})

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Alpha Question Bank for Engineering: Chemistry>Chapter 8 - Solutions>Exercise-1>Q 71

Which of the following has been arranged in the order of decreasing freezing point?

If relative decrease in vapour pressure is 0.4 for a solution containing 1 mol NaCl in 3 mol H2O, NaCl is _____ % ionised.

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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.