Calculate the amount of ice that will separate out on cooling a solution containing 50g of ethylene glycol in 200g water to `-9.3^(@)C` (`K_(f)` for water `= 1.86 "K kg mol"^(-1)`)

Options

A. `48.2 g`
B. `38.71 g`
C. `37.1g`
D. `4.2g`

Answer

D

Explanation

`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.