AIIMS 2007
- Exam
- AIIMS
- Year
- 2007
- Subject
- Chemistry
- Chapter
- Ionic Equilibrium
AIIMS 2007 · Chemistry · Ionic Equilibrium
During titration of acetic acid with aq. (NaOH) solution, the...
During titration of acetic acid with aq. (\mathrm{NaOH}) solution, the neutralisation graph has a vertical line. This line indicates
Options
- Aalkaline nature of equivalence
- Bacidic nature of equivalence
- Cneutral nature of equivalence
- 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 (\mathrm{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.
(\mathrm{CH}_3 \mathrm{COOH}+\mathrm{NaOH} \longrightarrow \underset{\text{Sodium acetate}}{\mathrm{CH}_3 \mathrm{COONa}}+\mathrm{H}_2 \mathrm{O})
Due to the presence of free base, solution becomes alkaline in nature.