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

  • question_answer
    Of the following four reactions, formic and acetic acids differ in which respect                                    [CPMT 1990, 93]

    A)                 Replacement of hydrogen by sodium

    B)                 Formation of ester with alcohol

    C)                 Reduction of Fehling solution

    D)                 Blue litmus reaction

    Correct Answer: C

    Solution :

    \[HCOOH+2C{{u}^{+2}}\underset{\text{Solution}}{\mathop{\xrightarrow{\text{Fehling}}}}\,\underset{\text{Red}\,\,\,ppt}{\mathop{C{{u}_{2}}O}}\,+{{H}_{2}}O+C{{O}_{2}}\]                                 Whereas   \[C{{H}_{3}}COOH\underset{\text{Solution}}{\mathop{\xrightarrow{\text{Fehling}}}}\,\text{No}\,\,\text{reaction}\]


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