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KVPY Sample Paper KVPY Stream-SX Model Paper-15

  • question_answer
    The standard reduction potential values of three metallic cations, X, Y, Z are \[0.52,\]\[-3.03\] and \[-1.18V\]respectively. The order of reducing power of the corresponding metals is

    A) \[Y>Z>X\]

    B) \[X>Y>Z\]

    C) \[Z>Y>X\]

    D) \[Z>X>Y\]

    Correct Answer: A

    Solution :

    According to spectrochemical series, lower the value of \[E{}^\circ \] more easily, it can loose electron. Thus, the order of decreasing value of reduction potential of corresponding metals is \[Y(E{}^\circ =-3.03V)>Z(E{}^\circ =-1.18V)>X(E{}^\circ =0.52V).\]Thus, the order of reducing power of the corresponding metal is \[Y>Z>X\]


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