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In a 0.2 molal aqueus solution of a weak...

In a 0.2 molal aqueus solution of a weak acid HX the degree of dissociation is 0.25. The freezing point of the solution will be nearest to: (`K_(f)=1.86 K kg "mol"^(-1)`)
a) `-0.26^(@)C`
b) `0.465^(@)C`
c) `-0.48^(@)C`
d) `-0.465^(@)C`

A

`-0.360^@C`

B

`-0,206^@C`

C

`+0.480^@C`

D

`-0.480^@C`

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