1.

Which of the following compounds would have the smallest value for PK_a ?

Answer»

`CHF_2 CH_2 CH_2 COOH`
`CH_3 CH_2 CF_2 COOH`
`CH_2 FCHF CH_2 COOH`
`CH_3 CF_2CH_2 COOH`

ANSWER :B


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