1. Tardigrade
  2. Question
  3. Chemistry
  4. An organic compound (A) with molecular formula C 7 H 8 O dissolves in NaOH and gives characteristic colour with FeCl 3. On treatment with Br 2, it gives a tribromo product C 7 H 5 OBr 3. The compound is:

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. An organic compound (A) with molecular formula $C _{7} H _{8} O$ dissolves in $NaOH$ and gives characteristic colour with $FeCl _{3}$. On treatment with $Br _{2}$, it gives a tribromo product $C _{7} H _{5} OBr _{3}$. The compound is:

Alcohols Phenols and Ethers

Solution:

Four $DU$ in $A$ and $( C : H \approx 1: 1)$ suggest benzene ring with one extra $C$ atom. Reactivity with $NaOH$ and $FeCl _{3}$ suggests $( A )$ to be a phenol. The formation of a tribromo product suggests that $O$ - and $p$-positions are vacant. So methyl group should be present at $m$-position. Hence, (A) is $m$-cresol.

Solution Image