Correct statements for given reaction are:

(A) Compound B is aromatic
(B) Completion is very slow
(C) A shows tautomerism
(D) Bond lengths C-C in B are same

Question

Correct statements for given reaction are:

(A) Compound B is aromatic
(B) Completion is very slow
(C) A shows tautomerism
(D) Bond lengths C-C in B are same

Canvas Classes · Accepted Answer

Step 1: Analyzing Squaric Acid Reaction
Squaric acid reacts with 2 equivalents of  to form the squarate dianion (Compound B).
- (A) Aromaticity: The squarate dianion is a 2π-electron system (resonance hybrid) which is aromatic and very stable. (True)
- (C) Tautomerism: Squaric acid (Compound A) exists in equilibrium with its tautomeric forms. (True)
- (D) Bond Lengths: Due to aromaticity and resonance, all  bond lengths in the square dianion are identical. (True)
 - Statement (B) says completion

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