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JEE Advanced2010ChemistryIonic EquilibriumActual

Aqueous solutions of HNO ₃, KOH , CH ₃ COOH , and CH ₃ COONa of identical concentrations are provided. The pair(s) of solutions which form a buffer upon mixing is(are)

Options

  1. AHNO ₃ and CH ₃ COOH
  2. BKOH and CH ₃ COONa
  3. CHNO ₃ and CH ₃ COONa
  4. DCH ₃ COOH and CH ₃ COONa

Correct answer

C. HNO ₃ and CH ₃ COONa

Step-by-step solution

HNO ₃ and CH ₃ COONa can form buffer if the amount of HNO ₃ is limited. However concentrations are same but the amount can differ with manipulation of volume. Ionic equilibrium Conceptual II

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