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Ethylene glycol is used as an antifreeze...

Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at `-6^(@)C` will be `(K_(f)` for water `= 1.86 Kkg mol^(-1)`, and molar mass of ethylene glycol `=62 g mol^(-1))`

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The correct Answer is:
A
`DeltaT_(f)=6`
`6=1086xx(x)/(4)`
`x=12.90"mole"`
Molar mass of ethylene glycol=62
Mass of ethylene glycol=800
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