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J & K CET Medical J & K - CET Medical Solved Paper-2001

  • question_answer
    How many Faradays of electricity are required. to be passed through an aqueous solution of\[AlC{{l}_{3}}\]for deposition of 13.5 g of aluminium metal?

    A)  0.5                                        

    B)  1.0

    C)  1.5                                        

    D)  2

    Correct Answer: C

    Solution :

                    \[A{{l}^{3+}}+3{{e}^{-}}\xrightarrow{{}}Al\] \[\because \]27 g of\[Al\]require electricity = 3 F \[\therefore \]13.5 g of\[Al\]will require electricity \[=\frac{3}{27}\times 13.5=1.5\,F\]


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