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The amount of ice that will separate out...

The amount of ice that will separate out on cooling a solution containing `60g` of ethylene glycol in `200g` water to `-9.3^(@)C` is: (`K_(f)'=1.86K "molality"^(-1)`)

A

`48.2 g`

B

`38.71 g`

C

`37.1g`

D

`4.2g`

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaT_(f)=(K_(f)xxw_(1)xx1000)/(m_(1)xxw_(2))`
`rArr 9.3=(1000xx.86xx50)/(62xxw_(2))`
`w_(2)=161.2g`
Wt. of ice separated =(200-161 2) g
`=37.71g`
Hence, (B) is the correct answer.
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