JEE Main & Advanced Sample Paper JEE Main Sample Paper-25

  • question_answer
    \[Pt({{H}_{2}})\left| pH=2 \right|\left| pH=3 \right|Pt({{H}_{2}})\] 1 atm                1 atm The ceil reaction for the given cell is

    A)  spontaneous                 

    B)  non-spontaneous

    C)  equilibrium                   

    D)  None of these

    Correct Answer: B

    Solution :

    \[{{E}_{cell}}=E_{cell}^{0}\,-\frac{0.0591}{1}{{\log }_{10}}\,\frac{{{[{{H}^{+}}]}_{anode}}}{{{[{{H}^{+}}]}_{cathode}}}\,\]\[=\frac{0.0591}{1}{{\log }_{10}}\frac{{{10}^{-2}}}{{{10}^{-3}}}\,=-ve\] (non spontaneous).


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