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Chemistry - Ionic Equilibrium

Practise 20 JEE Advanced previous year questions on Ionic Equilibrium, compiled from papers spanning 2008 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Advanced tests.

Ionic Equilibrium has been asked in 12 of the 27 years of JEE Advanced papers analysed (2000–2026), with 20 questions in all. 5% of them were easy, 40% moderate and 55% tough. Most of its questions came from 2010, with 3 questions that year. In the last three years (2024–2026) it had 2 questions across 6 papers, about 0.3 per paper.

The chapter's 5 topics are not weighted equally: Solubility (9 questions, 45%), PH of solutions (6 questions, 30%), and Salt Hydrolysis (2 questions, 10%) have been asked the most. Solubility has also led over the last five years, with 3 questions. Solubility has produced the most tough questions (5).

  1. 1At , the concentration of ions in aqueous solution of a weak monobasic acid having acid dissociation constant is . The value of is _____ . U2025 (Paper 1)PH of solutions
  2. 2The solubility of barium iodate in an aqueous solution prepared by mixing 200 mL of 0.010 M barium nitrate with 100 mL of 0.10 M sodium ioda2025 (Paper 2)Solubility
  3. 3On decreasing the pH from 7 to 2 , the solubility of a sparingly soluble salt ( MX ) of a weak acid ( HX ) increased from 10 - 4 mol L - 1 t2023 (Paper 1)Solubility
  4. 4A solution is prepared by mixing 0 . 01 mol each of H 2 CO 3 , NaHCO 3 , Na 2 CO 3 , and NaOH in of water. pH of the resulting solution is [2022 (Paper 1)PH of solutions
  5. 5Concentration of H 2 SO 4 and Na 2 SO 4 in a solution is 1 M and 1 . 8 10 - 2 M , respectively. Molar solubility of PbSO 4 in the same solut2022 (Paper 2)Solubility
  6. 6A solution of 0 . 1 M weak base ( B ) is titrated with 0 . 1 M of a strong acid ( HA ) . The variation of pH of the solution with the volume2020 (Paper 2)PH of solutions
  7. 7An acidified solution of 0 . 05 M Zn 2 + is saturated with 0 . 1 M H 2 S . What is the minimum molar concentration ( M ) of H + required to 2020 (Paper 2)Solubility
  8. 8For the following reaction, the equilibrium constant K e at 298 K is 1.6 10 17 . F e 2 + a q + S 2 - a q F e S s When equal volumes of 0.06 2019 (Paper 1)Solubility
  9. 9The solubility of a salt of weak acid AB at pH 3 is Y 10 - 3 mol L - 1 . The value of Y is ____. (Given that the value of solubility product2018 (Paper 1)Solubility
  10. 10The dilution processes of different aqueous solutions with water are given in LIST-I. The effects of dilution of the solutions on [ H + ] ar2018 (Paper 2)PH of solutions
  11. 11When 100 mL of 1.0 M HCl was mixed with 100 mL of 1.0 M NaOH in an insulated beaker at constant pressure, a temperature increase of 5.7 o C 2015 (Paper 2)Buffer solutions
  12. 12The initial rate of hydrolysis of methyl acetate 1 M by a weak acid ( HA , 1 M ) is 1 / 100 th of that by a strong acid HX , 1 M , at 25 C .2013 (Paper 1)Salt Hydrolysis
  13. 13The K sp of Ag 2 CrO 4 is 1 . 1 1 0 - 1 2 at 298 K . The solubility (in mol L - 1 ) of Ag 2 CrO 4 in a 0 . 1 M AgNO 3 solution is2013 (Paper 2)Solubility
  14. 14In saturated solution of mole of is added. The resultant concentration of in the solution is . The value of is2011 (Paper 2)Solubility
  15. 15Aqueous solutions of , , and of identical concentrations are provided. The pair(s) of solutions which form a buffer upon mixing is(are)2010 (Paper 1)Buffer solutions
  16. 16Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is2010 (Paper 1)PH of solutions
  17. 17The total number of diprotic acids among the following is2010 (Paper 2)Theories of Acids and Bases
  18. 18The dissociation constant of a substituted benzoic acid at is . The of solution of its sodium salt is2009 (Paper 2)Salt Hydrolysis
  19. 19of weak monoacidic base at is titrated with in water at . The concentration of at equivalence point is at2008 (Paper 1)PH of solutions
  20. 20Solubility product constant of salts of types and at temperature ' ' are and , respectively. Solubilities of the salts at temperature ' ' ar2008 (Paper 2)Solubility

Frequently Asked Questions

1.How many questions are available for Ionic Equilibrium?

This chapter includes 20 questions compiled from JEE Advanced papers spanning 2008 to 2025.

2.Are these questions only from JEE Advanced, or from other exams too?

These are JEE Advanced questions specifically for the Ionic Equilibrium chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Ionic Equilibrium an important chapter for JEE Advanced Chemistry?

Ionic Equilibrium has appeared in 12 of the 21 years of JEE Advanced papers covered here, with 20 questions across 18 papers - about one per paper it appears in.

4.What is the difficulty level of Ionic Equilibrium questions in JEE Advanced?

Of the 20 questions analysed for this chapter, 5% are easy, 40% moderate and 55% tough. 2010 had the most, with 3 questions.

5.Which topics in Ionic Equilibrium should I focus on?

These topics have carried the most weightage in Ionic Equilibrium:

  • Solubility - 9 questions (45%)
  • PH of solutions - 6 questions (30%)
  • Salt Hydrolysis - 2 questions (10%)
  • Solubility has produced the most tough questions (5).
6.Is Ionic Equilibrium's weightage in JEE Advanced going up or down?

Across all 18 papers analysed, Ionic Equilibrium has averaged about 1.1 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.