JEE Main & Advanced Chemistry Electrochemistry / विद्युत् रसायन Question Bank Cell constant and Electrochemical cells

  • question_answer
    If a strip of \[Cu\] metal is placed in a solution of ferrous sulphate            [NCERT 1974; CPMT 1977; MP PET 2000]

    A)                 Copper will precipitate out

    B)                 Iron will precipitate out

    C)                 Copper will dissolve

    D)                 No reaction will take place

    Correct Answer: D

    Solution :

                    \[Cu+FeS{{O}_{4}}\to \text{No}\,\,\text{reaction}\] Because Cu has \[{{E}^{o}}=0.34\] volt and \[Fe\] has \[{{E}^{o}}=-\,0.44\] volt.


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