NEET Sample Paper NEET Sample Test Paper-1

  • question_answer In the cell \[Zn|Z{{n}^{2+}}({{C}_{1}})||C{{u}^{2+}}({{C}_{2}})|Cu\,\,{{E}_{cell}}-{{E}^{o}}_{cell}=0.0591\,V\] The ratio \[{{C}_{1}}/{{C}_{2}}\] at 298K will be

    A)  \[2\]                            

    B)  \[100\]

    C)  \[{{10}^{-2}}\]               

    D)       \[1\]

    Correct Answer: C

    Solution :

    \[Zn+C{{u}^{2+}}\xrightarrow{{}}Z{{n}^{2+}}+Cu\] \[{{E}_{cell}}-{{E}^{o}}_{cell}=-\frac{0.0591}{2}\log \frac{[Z{{n}^{2+}}]}{[C{{u}^{2+}}]}\] i.e.     \[0.0591=-\frac{0.0591}{2}\log \,\frac{{{C}_{1}}}{{{C}_{2}}}\]                 \[\log \frac{{{C}_{1}}}{{{C}_{2}}}=-2\]                 \[~\frac{{{C}_{1}}}{{{C}_{2}}}=Antilo{{g}^{2}}={{10}^{-2}}\]

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