A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl or `pH = 10` and by passing bydrogen gas around the platinum wire at one atm pressure . The oxidation potential of electrode would be ?

Options

A. 0.59 V
B. 0.118 V
C. 1.18 V
D. 0.059 V

Answer

A

Explanation

`H_(2) to 2 H^(+) + 2e^(-)`
`1 atm " " 10^(-10)`
`E_(H_(2) // H^(+)) = 0 - (0.059)/(2) "log" ((10^(-10))^(2))/(1)`
`E_(H_(2) // H^(+)) = + 0.59 V `