1.

A hypothetical electrochemical cell is overset(Theta)(A)|A^(+)(xM)||B^(+)(yM)|overset(o+)(B) The emf measured is +0.20V. The cell reaction is

Answer»

The cell reaction cannot be PREDICTED
`A+B^(_)toA^(+)+B`
`A^(+)+BtoA+B^(+)`
`A^(+)+e^(-)toA,B^(+)+e^(-)toB`

SOLUTION :`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`


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