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A solution containing 62 g ethylene glycol in 250 g water is cooled to –10°C. If Kf for water is 1.86 K kg mol-1, the amount of water separated as ice is

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a
32 g
b
48 g
c
16 g
d
64 g

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detailed solution

Correct option is D

ΔTf=Kf·m Therefore, m= no. of  moles of solute  volume of solvent (Kg)10=1.86×62/62 WkgW=0.186 kgΔW=(250-186)=64gm

Therefore, the correct option is D

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