At what pH of HCl slutionw ill hydrogen gas electrode show electrode potential of `-0.118V`? `H_(2)` gas is bubbled at 298 K and 1 atm pressure.

At what pH of HCl slutionw ill hydrogen gas electrode show electrode p

1.	At what pH of HCl slutionw ill hydrogen gas electrode show electrode potential of `-0.118V`? `H_(2)` gas is bubbled at 298 K and 1 atm pressure.
Answer» Writing electrode reaction as reduction reaction, `H^(+)+e^(-)to(1)/(2)H_(2)` Applying nernst equation, `E_(H^(+)//H_(2))=E_(H^(+)//H_(2))^(@)-(0.0591)/(1)"log"(1)/([H^(+)])=0+0.0591log[H^(+)]` or `-0.118=-0.0591pH` or `pH=2` (`becausepH=-log[H^(+)])`

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At what pH of HCl slutionw ill hydrogen gas electrode show electrode potential of `-0.118V`? `H_(2)` gas is bubbled at 298 K and 1 atm pressure.

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