Uttarakhand PMT Uttarakhand PMT Solved Paper-2009

  • question_answer
    The incorrect order with respect to the acidic strength is

    A)  formic acid > acetic acid > propionic acid

    B)  cyclohexanol < phenol < benzoic acid

    C)  benzamide < aniline < cyclohexylamine

    D)  \[FC{{H}_{2}}COOH>ClC{{H}_{2}}COOH>BrC{{H}_{2}}COOOH\]

    Correct Answer: C

    Solution :

     Usually presence of electron withdrawing groups such as\[F,Cl,\]CHO etc increases the acidic strength and presence of electron releasing groups such as\[-R,-OC{{H}_{3}}\]etc decreases the acidic strength. Aromatic compounds are more acidic than their corresponding aliphatic compounds due to resonance stabilisation. Hence, the correct order of acidic strength is


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