A hypothetical elecrochemical cell is shown below:
`A^(ɵ)|A^(+)(xM)||B^(+)(yM)||B^(o+)`
The emf measured is `+0.20 V`. The cell reaction is

Options

A. The cell reaction cannot be predicted
B. `A+B^(_)toA^(+)+B`
C. `A^(+)+BtoA+B^(+)`
D. `A^(+)+e^(-)toA,B^(+)+e^(-)toB`

Answer

B

Explanation

`overset(Theta)(A)//A^(+)(xM)` represents -ve pole (anode) on which oxidation occurs. `B^(+)(yM)//overset(o+)(B)` represents +ve pole (cathode) on which reduction occurs. Hence, cell reaction is `A+B^(+)toA^(+)+B`