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A 0.2 molal aqueous solution of weak aci...

A 0.2 molal aqueous solution of weak acid HX is `20%` ionized. The freezing point of solution is (`K_f =1.86`)

A

`-0.45^@C`

B

`-0.9^@C`

C

`-0.31^@C`

D

`-0.53^@C`

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The correct Answer is:
A
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