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Which of the following is in Ionic Equilibrium?(a) 2AgI + Na2S \(\rightleftharpoons\)Ag2S + 2NaI(b) 4 NH3 + 5 O2 \(\rightleftharpoons\)4 NO + 6 H2O(c) TiCl4 + 2 H2O \(\rightleftharpoons\)TiO2 + 4 HCl(d) H2O + H2O \(\rightleftharpoons\)H3O^+ + OH^–The question was posed to me in an online quiz.My doubt stems from Ionic Equilibrium in Solution in division Equilibrium of Chemistry – Class 11

Answer»

Right answer is (d) H2O + H2O \(\rightleftharpoons\)H3O^+ + OH^–

For EXPLANATION I would say: Only H2O + H2O \(\rightleftharpoons\)H3O^+ + OH^– is in ionic EQUILIBRIUM. As the equilibrium established between the UNIONIZED molecules and the IONS in the solution of WEAK electrolytes is known as Ionic Equilibrium.



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