Write the equilibrium constant expression for this reaction:

Question

Write the equilibrium constant expression for this reaction:

H₂SO₄(aq) → 2H⁺(aq)+SO^2-₄(aq)

Answer 1

H₂SO₄(aq) → 2H⁺(aq) + SO^2-₄(aq) .. balanced equation

Keq = [H⁺]²[SO₄^2-] / [H₂SO₄] if the reaction actually occurred as written, however, see below

NOTE: H₂SO₄ (sulfuric acid) is only a strong acid for the first H+ ionization. Thus, the dissociation of H₂SO₄ actually occurs in 2 steps:

H₂SO₄(aq) <==> H⁺(aq) + HSO₄^-(aq)

HSO₄^-(aq) <==> H⁺(aq) + SO₄^2-(aq)