WBCS.LIVE practice question

What is the conjugate base of Sulfuric acid (H2SO4) ?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Sulfate ion SO2-
  2. Sulfite ion SO32-
  3. Hydrogen sulfate ion HSO4-
  4. Hydronium ion H3O+

Correct answer and explanation

Correct answer: Hydrogen sulfate ion HSO4-

Explanation: āœ… Correct Answer: C) Hydrogen sulfate ion Hydrogen sulfate ion HSO4- šŸ“š Explanation: According to the Bronsted-Lowry acid-base theory, a conjugate base is exactly what remains after an acid formally donates a single proton (H+). When sulfuric acid ((H2SO4)) loses one proton, it naturally transforms into the hydrogen sulfate ion (Hydrogen sulfate ion HSO4-), which is its direct conjugate base.