Which of the following is NOT a conjugate acid-base pair? Which of the following is NOT a conjugate acid-base pair? H2SO3/HSO3- NH4+/NH3 C2H3O2-/HC2H3O2 H3O+/OH-

H₃O⁺/OH⁻

Explanation:

Conjugate acid-base pair are defined as compounds which differ by H⁺. The acid is the compound that contains the additional H⁺

The conjugate base of H₂SO₃ is HSO₃⁻. The conjugate base of NH₄⁺ is NH₃. The conjugate acid of C₂H₃O₂⁻ is HC₂H₃O₂ and conjugate base of H₃O⁺ is H₂O, not OH⁻. Thus, right answer is H₃O⁺/OH⁻.

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metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.