Organic Chemistry Basics 2 Question 77
77. You have an ether solution containing 4-hydroxybenzoic acid and 4-aminobenzoic acid. Explain, how will you separate the two in not more than 3 steps? Give confirmatory tests with reagents and conditions for functional groups of each.
(2003)
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Solution:
(aqueous layer)
$\xrightarrow{\mathrm{FeCl}_{3}}$ violet colouration confirm phenolic group
$$ \xrightarrow{\mathrm{NaHCO}{3}} \mathrm{CO}{2} \uparrow \xrightarrow[\text { water }]{\text { lime }} \text { milky } \longrightarrow-\mathrm{COOH} $$
