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

Options

A. alkaline nature of equivalence
B. acidic nature of equivalence
C. neutral nature of equivalence
D. depends on experimental proceeding.

Answer

A

Explanation

In any type of acid-base titration, there is a sudden change in the pH value at the end point. During the titration of 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 rarr underset("Sodium acetate")(CH_(3)COONa)+H_(2)O`
Due to the presence of free base, solution becomes alkaline in nature.