Select the pair of substances which is not a conjugate acid-base pair. A) H₃O⁺, H₂O B) HNO₂, NO₂^- C) H₂SO₄, HSO₄^- D) H₂S, S^2- E) NH₃, NH₂^-

Question

Quizplus · Accepted Answer

In a conjugate acid-base pair, one substance donates a proton (acid) and the other accepts a proton (base). In option D, H₂S is an acid, and it cannot donate a proton to S^2-, which is a solute of silver sulfide. Hence, they are not a conjugate acid-base pair.

Select the Pair of Substances Which Is Not a Conjugate