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The measured freezing point depression f...

The measured freezing point depression for a 0.1m aqueous `CH_(3)COOH` solution is `0.19""^(@)C`. The acid dissociation constant `K_(e)` at this concentration will be (Given `K_(f)`, the molal cryoscopic constant = 1.86 K kg `mol^(-1)`)

A

`4.76xx10^(-5)`

B

`4xx10^(-5)`

C

`8xx10^(-5)`

D

`2xx10^(-5)`

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