Question

Standard electrode potential `Au^(+3)//Au` couple is 1.428 V and that for `Na^(+)//Na` couple `-2.714 V` These two couples in their standard state are connected to make a cell. The cell potential will be :-
A. 4.142
B. 1.286V
C. `-1.286 V`
D. `3.376 V`

Answer 1

Correct Answer - A
`E_(cell)^(@)=E_(R.P.)^(0)(cathode)-E_(R.P)^(0)(Anode)`
`1.428-(-2.714)`
`=4.142V`