1.

A hydrogen gas electrode is made by dipping platinum wire is a solution of HCl of pH=10 and by passing hydrogen gas around the platinum wire at one atom prssure. The oxidation potential of the electrode would be

Answer»

0.059 V
0.59 V
0.118 V
0.18 V

Solution :For HYDROGEN electrode, reduction reaction is
`H^(+)+e^(-)to(1)/(2)H_(2)`
`E_(H^(+)//(1)/(2)H_(2))^(@)=E_(H^(+)//(1)/(2)H_(2))^(@)-(0.0591)/(n)"LOG"(p_(H_(2))^(1//2))/([H^(+)])`
`=0-(0.0591)/(n)"log"(1)/(10^(-10))=-0.591`
`(pH=10" MEANS "[H^(+)]=10^(-10)M)`
`therefore`OXIDATION potential`=0.591V`


Discussion

No Comment Found

Related InterviewSolutions