JEE Main & Advanced Chemistry Carboxylic Acids Question Bank Properties of Carboxylic Acids and Their Derivatives

  • question_answer
    Colouration of \[B{{r}_{2}}/CC{{l}_{4}}\] will be discharged by [Orissa JEE 2005]

    A)                 Cinnamic acid    

    B)                 Benzoic acid

    C)                 o-phthalic acid  

    D)                 Acetophenone

    Correct Answer: A

    Solution :

               Cinnamic acid reacts with bromine in carbon tetrachloride to give dibromocinnamic acid. \[{{C}_{6}}{{H}_{5}}CH=CHCOOH+B{{r}_{2}}\xrightarrow{CC{{l}_{4}}}\,\underset{\text{dibromocinnamic acid}}{\mathop{\overset{Br\,\,\,\,\,\,Br\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,}{\mathop{{{C}_{6}}{{H}_{5}}CH-CHCOOH}}\,}}\,}}\,\]


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