A hypothetical electrochemical cell is shown below.
`A|A^(+)(xM)||B^(+)(yM)|B^(+)`
The e.m.g. measured is 0.20V the cell reaction is

Options

A. The cell reaction cannot be predicted
B. `A+B^(+)rarrA^(+)+B `
C. `A^(+)+BrarrA+B^(+)`
D. `A^(+)+e^(-)rarrA:B^(+)+e^(-)rarrB`.

Answer

B

Explanation

`A//A^(+)(xM)` represents -ve pole (anode) on which oxidation occurs.
`B^(+)(yM)B ^(+)` represents +ve pole (cathode) on which reduction occurs.
Hence cell reaction `A+B^(+)rarrA^(+)+B`