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A 0.2 Molal aqueous solution of a w...

A 0.2 Molal aqueous solution of a weak acid (HX) is 20 % ionised . The freezing point of this solution is ______.
`("Given " =K_(f) =1.86^(@)C/m` for water )

A

`-0.31 ^(@)C`

B

`-0.45^(@)C `

C

`-0.53 ^(@) C`

D

`-0.90^(@) C`

Text Solution

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The correct Answer is:
B
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