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NEET Sample Paper NEET Sample Test Paper-7

  • question_answer
    If the standard electrode potenital of \[C{{u}^{2+}}/Cu\]electrode is \[0.34\text{ }V,\] what is the electrode potential of \[0.01\text{ }M\] concentration of \[C{{u}^{2+}}\]? (T= 298 K)

    A)  \[0.399\,V\]                

    B)  \[0.281\,V\]

    C)  \[0.222\,V\]                

    D)  \[0.176\,V\]

    Correct Answer: B

    Solution :

    \[C{{u}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Cu\] \[E={{E}^{o}}-\frac{0.0591}{n}\log \frac{1}{\left[ C{{u}^{2+}} \right]}\] \[=0.34\frac{0.0591}{2}\log \frac{1}{0.01}\] \[=0.2809V\]


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