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Given `E^(c-)._(Fe^(2+)|Fe)` and `E^(c-)._(Fe^(3+)|Fe^(2+))` are `-0.44` and `0.77V` respectively. If `Fe^(2+),Fe^(3+)` and `Fe` blocks are kept together, then `[Fe^(3+)]` `……………………` and `[Fe^(2+)]…………………….` .A. `Fe^(3+)` increasesB. `Fe^(3+)` decreasesC. `Fe^(2+), Fe^(3+)` remain unchangedD. `Fe^(2+)` decreases |
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Answer» Correct Answer - b Cell reaction `: 2Fe^(3+)+Fe rarr 3Fe^(2+)` `E^(c-)._(cell)=0.77-(-0.44)=1.21V` `implies Fe^(3+)` and `Fe` will reduce. |
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