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NEET Sample Paper NEET Sample Test Paper-89

  • question_answer
    Two electrolytic cells, one containing acidified ferrous chloride and another acidified ferric chloride, are connected in series. The ratio of iron deposited at cathodes in the two cells will be;

    A) 3 : 1                             

    B) 2 : 1

    C) 1 : 1                 

    D)        3 : 2            

    Correct Answer: D

    Solution :

    Not Available             [d] At cathodes : \[F{{e}^{+}}+2{{e}^{-}}\xrightarrow[{}]{}Fe;\] \[F{{e}^{3+}}+3{{e}^{-}}\xrightarrow[{}]{}Fe\] \[{{({{E}_{Fe}})}_{1}}=\frac{At.\,\,wt.}{2};\] \[{{({{E}_{Fe}})}_{2}}=\frac{At.\,\,wt.}{3}\] Hence,\[\frac{{{({{E}_{Fe}})}_{1}}}{{{({{E}_{Fe}})}_{2}}}=\frac{3}{2}\]


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