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Manipal Engineering Manipal Engineering Solved Paper-2009

  • question_answer
    In the electrolysis of acidulated water, it is desired to obtain\[1.12\,\,cc\]of hydrogen per second under STP condition. The current to be passed is

    A) \[1.93\,\,A\]                      

    B) \[9.65\,\,A\]

    C) \[19.3\,\,A\]      

    D)        \[0.965\,\,A\]

    Correct Answer: B

    Solution :

    No. of moles of\[{{H}_{2}}=\frac{1.12}{22400}\] No. of equivalence of hydrogen                 \[=\frac{1.12\times 2}{22400}={{10}^{-4}}\] No. of Faradays required\[={{10}^{-4}}\] \[\therefore \]Current to be passed in one second                 \[=96500\times {{10}^{-4}}\]                 \[=9.65\,\,A\]


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