What will be the oxidation potential for the following hydrogen half cell at 1 bar pressure and `25^(@)` C temperature ?
`Pt|underset("1 bar")(H_(2(g)))|HCl_((aq))pH= 3`

Options

A. 0.059 V
B. 0.188 V
C. 0.177 V
D. 0.000 V

Answer

C

Explanation

`(1)/(2)H_(2)(g) to H^(+)(aq)+e^(-)`
P= 1atm
`E_(OP) = E_(OP)^(O) (-0.059)/(1)log[H^(+)]`
`E_(OP)= 0+ 0.059pH`
`= 0.059 xx 3= 0.177 V`