Question

Which one of the following compounds is most
acidic?

Answer 1

Answer:

phenols are stronger acids than alchols because the phenoxide ion left after the realse of a proton

stabilized by resonance but the alkoxide ion is not.Further the electron-withdrawing group (-NO2) which stabilize phoneoxide ion is the negative charge relative the phenol increase the acidic strength phenol whereas electron donating group(-CH3).

which desteblize the phenoxide ion by intensifying the negative charge relative to phenol tend to decrease the acidity of phenols.