Chemistry Crash Course JEE Main>Chapter 22 - Solutions>Level 2>Q 29

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Chemistry Crash Course JEE Main>Chapter 22 - Solutions>Level 2>Q 30

Which of the following pair of solutions have the same values of the Van't Hoff factor? (assume all of them are undergoing complete dissociation)

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Chemistry Crash Course JEE Main>Chapter 22 - Solutions>Level 2>Q 31

The osmotic pressure of naphthalene solution at

27 ° C

is

500 mm .

When the solution is diluted and the temperature is raised to

47 ° C,

the osmotic pressure of the solution becomes

105 mm .

The extent of dilution approximately is

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Chemistry Crash Course JEE Main>Chapter 22 - Solutions>Level 2>Q 32

In which of the following are the solute and solvent's physical states a solid and gas, respectively?

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Chemistry Crash Course JEE Main>Chapter 22 - Solutions>Level 2>Q 33

____ mL

of concentrated sulphuric acid of specific gravity

1.84 g / mL

containing

98 %

H_{2} {SO}_{4}

solution by weight is required to prepare

200 mL

of

0.5 N

acid solution.

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Chemistry Crash Course JEE Main>Chapter 22 - Solutions>Level 2>Q 34

How much ice will separate if a solution containing

25 g

of ethylene glycol

[C_{2} H_{4} (OH)_{2}]

in

100 g

of water is cooled to

- 10 ° C

?

(K_{f} (H_{2} O) = 1.86)

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Chemistry Crash Course JEE Main>Chapter 22 - Solutions>Level 2>Q 35

At $25 ° C$ , a solution containing $0.2 g$ of polyisobutylene in $100 cc$ of benzene, developed a rise of $2.4 mm$ at osmotic equilibrium. Calculate the molecular weight (in the multiple of $10^{5}$ ) of polyisobutylene if the density of the solution is $0.88 g / cc$ . Give your answer up to one decimal place after rounding-off.

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Chemistry Crash Course JEE Main>Chapter 22 - Solutions>Level 2>Q 36

The water vapour pressure at

293 K

is

2338.5 Pa

and the vapour pressure of an aqueous solution is

2295.8 Pa

. Determine the osmotic pressure

(in atm)

of this solution at

313 K

, if the solution density at this temperature is

1010 kg / m^{3}

. The molecular weight of the solute is

60

. Give answer to the nearest integer.

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Chemistry Crash Course JEE Main>Chapter 22 - Solutions>Level 2>Q 37

5.0 g

of a polymer of molecular weight

50.0 kg {mol}^{- 1}

is dissolved in

1 {dm}^{3}

of water. If the density of this solution is

0.96 kg {dm}^{- 3}

, calculate the height of water

(in mm)

that will represent this pressure.