On heating with dilute sulfuric acid, napththalene-1 sulfonic acid gives predominantly · ABC26OR0450
Subject: Organic Chemistry · Chapter: Heterocyclic Compounds · Topic: Heterocyclic Compounds – General · Exam: GATE 2000-2022 · Marks: 2 · Difficulty: Easy
On heating with dilute sulfuric acid, napththalene-1 sulfonic acid gives predominantly
(a)natphthalene
(b)napththalene-2-sulfonic acid
(c)1-naphthol
(d)2-naphthol
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
Sulfonation is reversible: dilute H₂SO₄ on heating desulfonates the kinetic 1-sulfonic acid to naphthalene (a).
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