1.

Among the following acids which has the lowest pK_(a) value ?

Answer»

`CH_(3)COOH`
`HCOOH`
`(CH_(3))_(2)CH - COOH`
`CH_(3)CH_(2)COOH`

SOLUTION :`HCOOH` is stronest acid and HENCE has HIGHEST `K_(a)` value and lowest `pK_(a)` value


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