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At 25^@C, the reduction potential of hyd...

At `25^@C`, the reduction potential of hydrogen electrode is -0.118 V at 1 atm. What is the pH of acid solution used for the construction of the electrode?

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`E = E^(@) + (0.059)/(n) log C " (or) " E = E^@ + (0.059)/(2) log [H^+]`
`-0.118 = 0.059 log [H^+] " (or) " - log[H^+] = 2, pH = 2`.
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