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NEET Sample Paper NEET Sample Test Paper-11

  • question_answer
    The cell reaction of a cell is\[Mg(s)+C{{u}^{2+}}(aq)\xrightarrow{{}}Cu(s)+M{{g}^{2+}}(aq)\]. If the standard reduction potentials of Mg and Cu are -2.37 and +0.34 V respectively. The emf of the cell is

    A)  2.03 V                         

    B)  -2.03 V

    C)  +2.71 V                      

    D)  -2.71 V

    Correct Answer: C

    Solution :

     \[E_{cell}^{o}=E_{cathode}^{o}-E_{anode}^{o}\] \[=0.34-(-2.37)=+2.71V\]


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