InterviewSolution
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InterviewSolution
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A cell, as shown below, consists of there compartments separated by porous pots. The first contains a cobalt eletrode in `5.0L` of `0.10M Co(NO_(3)),` the second contains `5.0L` of `0.10M KNO_(3),` the third contains an `Ag` electrode in `5.0L` of `0.10M AgNO_(3)`. Assuming that current with in the cell iis carried equally by the negative and positive ions by passign `0.1F` of electricity. Given `: Co^(2+)+2e^(-) rarr Co" "E^(c-)=-0.28V` Ag^(o+)+e^(-) rarr Ag" "E^(c-)=0.80V` `2Ag^(o+)+Corarr Co^(2+)+2Ag" "E^(c-)._(cell)=1.08V` Finally, the `I` compartment contains `I. Co^(2+)" "II. NO_(3)^(c-)" "III.K^(o+)" "IV.Ag^(o+)`A. `I`B. `I,II`C. `I,II,III`D. `II,III,IV` |
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Answer» Correct Answer - b There is movement of `NO_(3)^(c-)` ions from `III` to `II` and `II` to `I` compartment to maintain electrical neutrality in `I` compartment since there is increase in positive charge due to the oxidation of `Co` to `Co^(2+)` in `I` compartment. Hence, ions present in `I` compartment are `:Co^(2+)` and `NO_(3)^(c-)`. |
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