Identify the wrong match from the following

Set - I Set - II

A) HCl - NaOH 1) Methyl orange

B) HCl - NH₄OH 2) Methyl red

C) CH₃COOH-NaOH 3) Any indicator

D) CH₃COOH-NH₄OH 4) Phenolphthalein

5) No suitable indicator

Easy

Solution

At equivalents point, CH₃COONH₄ salt is formed whose P^H ~ 7. Therefore, an indicator with P^H range after 7 will be useful.

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