Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2005

  • question_answer
    For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of a saturated carboxylic acid is subjected to

    A)  Hydrolysis      

    B)  Oxidation

    C)  Hydrogenation 

    D)  Electrolysis

    Correct Answer: D

    Solution :

    A concentrated solution of the sodium or potassium salt of a carboxylic acid or mixture of carboxylic acids is electrolysed. \[\underset{\begin{smallmatrix}  potassium \\  acetate  \\  (2\,moles) \end{smallmatrix}}{\mathop{\underset{C{{H}_{3}}COOK}{\overset{C{{H}_{3}}COOK}{\mathop{+}}}\,}}\,+2{{H}_{2}}O\xrightarrow[(Electrolysis)]{Current}\underset{at\,anode}{\mathop{{{C}_{2}}{{H}_{6}}+2C{{O}_{2}}}}\,\]\[\underset{at\,\,cathode}{\mathop{+2KOH+{{H}_{2}}}}\,\]


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