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AIIMS2007ChemistryIonic Equilibrium

During titration of acetic acid with aq. ( NaOH ) solution, the neutralisation graph has a vertical line. This line indicates

Options

  1. Aalkaline nature of equivalence
  2. Bacidic nature of equivalence
  3. Cneutral nature of equivalence
  4. Ddepends on experimental proceeding.

Correct answer

A. alkaline nature of equivalence

Step-by-step solution

In any type of acid-base titration, there is a sudden change in the ( pH ) value at the end point. During the titration of a weak acid with a strong base, beyond the equivalent point, the solution will contain the salt and excess of free base. ( CH ₃ COOH + NaOH Sodium acetate CH ₃ COONa + H ₂ O ) Due to the presence of free base, solution becomes alkaline in nature.

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