Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 2 NEET>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 27

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The lowering in vapour pressure on the addition of $18 g$ of glucose to $1000 g$ of water is (the vapour pressure of pure water at $298 K$ is $23.8 mm Hg$ , atomic masses of $C = 12 u, H = 1 u, O = 16 u$ )

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Important Questions on Solutions

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 2 NEET>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 28

The pressure of water vapour of a solution containing a non-volatile solute is

2 %

below that of the vapour of pure water. The molality of the solution is

(H = 1 u, O = 16 u)

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 2 NEET>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 29

Which has a maximum osmotic pressure at temperature

T

?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 2 NEET>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 30

${PtCl}_{4} \cdot 6 H_{2} O$ 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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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 2 NEET>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 31

The Van't Hoff factor for

0.1 M Ba {({NO}_{3})}_{2}

solution is

2.74 .

The degree of dissociation is

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 2 NEET>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 32

Which of the following aqueous solutions has the highest boiling point?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 2 NEET>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 33

Y

g

of a non-volatile organic substance of molecular mass

M

is dissolved in

250 g

benzene. Molal constant of benzene is

K_{b} .

Elevation in its boiling point is given by

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 2 NEET>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 34

The values of observed and calculated molecular weights of silver nitrate are

92.64

and

170

respectively. The degree of dissociation of silver nitrate is:

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 2 NEET>Chapter 2 - Solutions>TOPICWISE QUESTIONS>Q 35

20 g

of a binary electrolyte (molecular wt.

= 100

) are dissolved in

500 g

of water. The freezing point of the solution is

- 0.74 ° C, K_{f} = 1.86 K

{molality}^{- 1}

. The degree of ionization of the electrolyte is