1.

The standard electrode potential for the two electrode A^(+)//A and B^(+)//B are respectively 0.5V and 0.75V. The emf of the given cell A|A^(+)(a=1)||B^(+)(a=1)| B will be

Answer»

1.25V
`-1.25V`
`-0.25V`
`0.25V`

Solution :`A|OVERSET("ANODE")(A^(+)(a=1))||overset("CATHODE")(B^(+)(a=1))|B`
`EMF=E_("cathode")-E_("anode")=0.75-(0.5),EMF=0.25V`


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