Question

25 g of ethylene glycol is present in 100 g of water the solution `c kf for h2o is 1.86 the amount of ice separated on cooling is

Answer 1

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Here is ur answer

=> Given
ethylene glycol = 25 gm
kf=1.86

ΔTf=kf×m

where m= morality of solⁿ
 
let Tf =9.3°c

ΔTf=1.86×25×1000/w×62

9.3=1.86×25×1000/w×62

w=1.86×25×1000/9.3×62

w=80.6

∴ The mass of ice separated from H₂O =100-80.6 =19.4 gm


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