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Determine range of `E^(@)` values for this reaction `X_(aq)^(2+)+2e^(-)toX(s)` for given conditions: (a). If the metal X dissolve in `HNO_(3)` but not in `HCl` it can displace `Ag^(+)` ion but not `Cu^(2+)` ion. (b). If te metal X is HCl acid producing `H_(2)(g)` but does not displace either `Zn^(2+)` or `Fe^(2+)` Given `E_(Ag^(+)//Ag)^(0)=0.8V" "E_(Fe^(2+)//Fe)^(0)=-0.44` `E_(Cu^(2+)//Cu)^(0)=0.34V" "E_(NO_(3)^(-)//NO)^(0)=0.96V" "E_(zn^(2+)//Zn)^(0)=-0.76V` |
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Answer» Correct Answer - (a). `0.34ltE^(@)lt0.8` (b). `-0.44ltE^(@)lt0` (a). Metal should below hydrogen and `Cu^(2_)` but should above `Ag^(+)` in series. (b). Metal should above hydrogen but should below from `Zn^(2+)` and `Fe^(2+)` both. |
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