VMMC VMMC Medical Solved Paper-2014

  • question_answer
    In electrolysis of water, one faraday of electrical energy would evolve

    A) one mole of oxygen  

    B) one g atom of oxygen

    C) 8 g of oxygen       

    D) 22.4 L of oxygen

    Correct Answer: C

    Solution :

    \[2{{H}_{2}}O\xrightarrow[{}]{{}}4{{H}^{+}}+\underset{32g}{\mathop{{{O}_{2}}}}\,+\underset{4F}{\mathop{4{{e}^{-}}}}\,\] 4 F = 32 g oxygen 1 F = 8g oxygen


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