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  4. The reduction potential of hydrogen electrode when placed in a buffer solution is found to be -0.413 V. The pH of the buffer is

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Q. The reduction potential of hydrogen electrode when placed in a buffer solution is found to be $-0.413\, V$. The pH of the buffer is

Electrochemistry

Solution:

$-0.413 =0-0.059\, log \frac{1}{\left[H^{+}\right]} $
or $\frac{0.414}{1.159}=-log\, H^{+}\,=\,PH \,or\, PH\,=\,7$