Choose the case that is not a Bronsted conjugate acid-base pair. A) CH₃NH₃⁺, CH₃NH₂ B) HCN, CN^- C) HClO₂, ClO₂^- D) HCO₂H, HCOH E) H₃BO₃, H₂BO₃^-

Question

Quizplus · Accepted Answer

In a Brønsted-Lowry acid-base pair, the acid donates a proton (H+) to the base. In choice D, HCO₂H (formic acid) and HCOH (which seems to be a misrepresentation and does not form a correct conjugate base of formic acid, which should be HCO2-) do not form a correct acid-base pair according to the Brønsted-Lowry definition. The correct conjugate base of formic acid would be the formate ion, HCO2-, not HCOH.

Choose the Case That Is Not a Bronsted Conjugate Acid-Base