What happens during a Weak Acid vs Weak Base titration (e.g., with ) that prevents the use of visual indicators?

Name: JEE Advanced Chemistry
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Question

What happens during a Weak Acid vs Weak Base titration (e.g., $CH_3COOH$ with $NH_4OH$) that prevents the use of visual indicators?

Prashant Kotian · Accepted Answer

Correct answer: C. The titration curve for WA-WB has a smooth 'S' shape without a steep, vertical pH segment. Because the pH changes gradually, no indicator can provide a sharp endpoint.

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