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0.5 molal aqueous solution of a weak aci...

0.5 molal aqueous solution of a weak acid (HX) is 20% ionised. If `K_(f)` for water is `1.86K kg mol^(-1)`, the lowering in freezing point of the solution is

A

`-3.03 K`

B

`3.03 K`

C

`-3.03 ^@C`

D

`3.03 ^@C`

Text Solution

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The correct Answer is:
C
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