The strogest acid amongst the following compound is

Options

A. `CH_(3) COOH`
B. `HCOOH`
C. `CH_(3) CH_(2) CH(Cl) CO_(2) H`
D. `ClCH_(2) CH_(2) CH_(2) COOH`

Answer

B

Explanation

`.-1` effect exerting (electron withdrawing) ground increase the acidie strenth of an acid by withdrawing elctron density toward itself , they weaken `O-H` bond and thus, the release of `H^(+)` ion by an acid becomes easier.
Wherease `.^(+)1` effect axerting (e releasing) group decreases the acidie strength by donating electron density to O-atom. Further, `-1`effect decrease with distance. Thus, the acidic strength of the given acides would be

strongest acid than other given compound.