When phenol is treated with excess bromine water, the product that separates as a white precipitate is

A2,4,6-tribromophenol
B4-bromophenol
C2-bromophenol
D3-bromophenol

Answer: A

The

- OH

group strongly activates the ortho and para positions, so bromine water substitutes all three of them at once without a catalyst. The white precipitate is 2,4,6-tribromophenol; meta substitution does not occur.

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