1.

Standard electrode potential for `Sn^(4+)//Sn^(2+)` couple is `0.15 V` and that for the `Cr^(3+)//Cr` couple is `-0.74 V`. These two couples in their standard state are connected to make a cell. The cell potential will beA. `+1.19" V "`B. `+0.89" V "`C. `+0.18" V "`D. `+1.83" V "`

Answer» Correct Answer - B
(b) Cell potential is : `E_(cell)=E_(cathode)^(@)-E_(anode)^(@)`
`=E_(cathode)^(@)-E_(anode)^(@)`
`=0.15-(-0.74)=0.15+0.74=0.89" V "`.


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