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CET Karnataka Engineering CET - Karnataka 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                 \[=\frac{1.12}{22400}={{10}^{-4}}\] No. of Faradays required \[={{10}^{-4}}\]                 \[\therefore \] Current to be passed in one second                 \[=\text{ }96500\times {{10}^{-4}}\]                 \[=9.65\text{ }A\]


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