Question

When $o$- or $p-$ phenolsulphonic acid is treated with bromine water, the product formed is

• A. 2, 4-dibromophenol
• B. 2, 4, 6-tribromophenol
• C. 3-bromophenol boric acid
• D. 3, 5-dibromophenol

Answer 1

Answer: (B)

2, 4, 6-tribromophenol

Answer 2

Like nitration, bromination of $o$-or $p$-phenolsulphonic acid occurs with simultaneous replacement of $S{{O}_{3}}H$ group by $Br$ atom to ultimately give $2, 4, 6-$tribromophenol.