A=RCOOH, B=C6H5OH,  C=H2O, D=R−OH,  E=CH≡CH, F=NH3 Correct acidic strength

Greater the stability of anion produced due to deprotonation, greater will be the strength of a species.A) RCOO- has equivalent resonance structures which are indistinguishable. It is the most stable anion.B) C6H5O—  is resonance stabilised, in C6H5O- negative charge is delocalized on carbon atom also.C) HO- and RO- are not resonance stabilized but they have negative charge on electronegative oxygen atom. They are more stable than CH≡C¯  and  NH2−Stability of HO- > RO-  because in RO- charge accumulation occurs due to +I effect of –R. D) Stability of CH≡C¯ >NH2− because electronegativity of sp-carbon is greater than sp3 – nitrogen. Thus stability of  RCOO−>C6H5O−>HO−>RO−>CH≡C¯>NH2−Acidic strength of A > B > C > D > E > F.