1000g of 1molal aquous solution of sucrose is cooled and maintained at -3.5 degree C .Find how much ice will seperate out if Kf of water is =1.86

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1000 gm of 1 (m) sucrose solution in water is cooled to - 3.554-degree centigrade. What mass of ice would be separated out in nearest possible integers in gm at this temperature?

For water $K_{f}$ = 1.86 $K m o l^{- 1} k g$

1000 g

1 m

aqueous solution of sucrose is cooled and maintained at

- {3.534}^{\circ} C .

What amount of ice will separate out at this temperature?

K_{f} (H_{2} O) = 1.86 K \cdot k g \cdot m o l^{- 1} .

1

kg of an aqueous solution of sucrose is cooled and maintained at

- 4^{o}

C. How much ice will be separated out if the molality of the solution is

0.75

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

m o l^{- 1}

Q. How much ice will separate if a solution containing 25 g of ethylene glycol

[C_{2} H_{4} {(O H)}_{2}]

in 100g of water is cooled to

10^{o} C

K_{f} (H_{2} O)

1.86

(25.05 g)

Q. An ideal solution was prepared by dissolving some amount of cane sugar ( non-volatile) in 0.9 moles of water. The solution was then cooled just below its freezing temperature (271 K) where some ice get seperated out. The remaining aqueous solution registered a vapour pressure of 700 torr at 373 K. Calculate the mass of ice seperated out, if the molar heat of fusion of water is

6 k J

K_{f} = 1.86 K k g m o l^{- 1}

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