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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. `+0.89 V`B. `+0.18 V`C. `+1.83 V`D. `+1.199 V` |
Answer» Correct Answer - A (a) `E_(Sn^(4+)//Sn^(2+))^(@)=+0.15V` `E_(Cr^(3+)//Cr)^(@)=-0.74V` `E_(cell)^(@)=E_("cathode (RP)")^(@)-E_("anode (RP)")^(@)` `=0.15-(-0.74)` `=+0.89 V` |
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