Question

Which of the following titration is not performed practically
(a) NH4OH versus HCI
(b) NaOH wexsus HCl
(c)NH4OH versus CH3COOH (d)NaOH versus CH3COOH​

Answer 1

C is the right answer.

Explanation:

Titration of ammonium hydroxide and acetic is is not performed. Ammonium hydroxide is a weak base and Acetic acid is a weak acid. Weak acid and weak base titrations are not carried out practically because the colour change is too quick and is difficult to observe since there is only a very small change in pH.

Answer 2

The titration that is not performed practically is the titration of NH₄OH versus CH₃COOH (option c).

• Titration is a type of analytical chemistry that uses a color change to usually signal the end of a chemical reaction.
• All of the examples here are based on the notion of neutralizing reaction in acid-base titration. When a color change is detected along with the formation of salt, the reaction is said to be complete.
• Titration between ammonium hydroxide (NH4OH) and acetic acid (CH3COOH) is an example of acid-base titration.
• However, because ammonium hydroxide is a weakly alkaline compound and acetic acid is a weakly acidic compound, the actual dissociation of ions and salt production is difficult.
• There is also no suitable indicator because the endpoint is not found precisely throughout the titration.
• Hence, the titration between ammonium hydroxide and acetic acid is not performed practically.