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

  • question_answer
    Which decolourises the colour of acidic \[KMn{{O}_{4}}\] [CPMT 1991]

    A)                 \[C{{H}_{3}}COOH\]       

    B)                 \[C{{H}_{3}}C{{H}_{2}}COOH\]

    C)                 \[COOH.\,COOH\]          

    D)                 \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\]

    Correct Answer: C

    Solution :

               \[\begin{matrix}    COOH  \\    \overset{|\,}{\mathop{C}}\,OOH  \\ \end{matrix}+KMn{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\to 2C{{O}_{2}}+{{H}_{2}}O\]\[+{{K}_{2}}S{{O}_{4}}+MnS{{O}_{4}}\]


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