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question mark

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-11, the amount of water (in gm)
separated as ice is ??????????????????

preet kaur , 6 Years ago
Grade 11
anser 1 Answers
Mayank
Tf = Kf X m    where Tf is the temp. change and m=molality
now according to question 
10=1.86 x 62/(62 x WKg)
so WKg = 0.186kg
but the amount of water separated as ice would be =250-186=64gm 
hence ans . is 64gm
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Last Activity: 6 Years ago
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