15 JEE Main 2025 Ionic Equilibrium previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2025 previous-year questions from the Ionic Equilibrium chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Ionic Equilibrium chapter hub.
pH of water is 7 at 25ⁱrc C. If water is heated to 80ⁱrc C., it's pH will :
An aqueous solution of HCl with pH 1.0 is diluted by adding equal volume of water (ignoring dissociation of water). The…
The molar solubility(s) of zirconium phosphate with molecular formula (Zr⁴⁺ )₃ (PO₄³⁻ )₄ is given by relation :
The pH of a 0.01 M weak acid HX (Ka=4 × 10⁻¹⁰ ) is found to be 5. Now the acid solution is diluted with excess of water…
If 1 mM solution of ethylamine produces pH=9, then the ionization constant (Kb ) of ethylamine is 10⁻x. The value of x…
x mg of Mg(OH)₂( molar mass =58) is required to be dissolved in 1.0 L of water to produce a pH of 10.0 at 298 K. The va…
Only litre buffer solution was prepared by adding 0.10 mol each of NH₃ and NH₄ Cl in deionised water. The change in pH…
The equilibrium constant for decomposition of H₂ O(g) H₂ O(~g) H₂(~g)+(1)/(2) O₂(~g) (Δ Gⁱrc=92.34 ~kJ ~mol⁻¹ ) is 8.0…
A weak acid HA has degree of dissociation x . Which option gives the correct expression of ( pH pKa )?
Which of the following happens when NH₄ OH is added gradually to the solution containing 1 M A²⁺ and 1 MB³⁺ ions? Given…
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