1.2 kg ethylene glycol ((CH(2)OH),("| ...

1.2 kg ethylene glycol `((CH_(2)OH),("| "),(CH_(2)OH))` was added in a car radiator containing 9 litre water. The freezing of water as just prevented when car was running in the Himalayan valley at temperature `-4^(@)C`. Sudden thunderstorm in the valley lowered the temperature to `-6^(@)C`. Calculate the amount of ice separated.

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The correct Answer is:

3 kg ice

`DeltaT=K_(f)xx(w_(A)xx1000)/(m_(A)xxw_(B))Ararr"Solute",Brarr"Solvent"`
`6=1.86xx(1200xx1000)/(62xxw_(B))`
`w_(B)=6000`g
`I_("weight of ice")=` Total weight of `H_(2)O`-wt. of `H_(2)O` at `-6^(@)C`
`= 9000-6000=3000g=3kg`]

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