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Babita Narayanan
Asked: 2022-10-31T22:35:30+05:30 In:

An acid solution of `KReO_(4)` sample containing `26.83mg` of combined rhenium was reduced by passage through a column of granulated zinc. The effulent solution including the washings from the column, was then titrated with `0.5N KMnO_(4)`. `11.45mL` of the standard `KMnO_(4)` was required for the reoxidation of all the rhendium of all the rehniuym to the perryhentate ion `Re_O_(4)^(-)` . Assuming that rhenium was the only element reduced, what is the oxisation state to which rhenium was reduced by the zinc column?

An acid solution of `KReO_(4)` sample containing `26.83mg` of combined rhenium was reduced by passage through a column of granulated zinc. The effulent solution including the washings from the column, was then titrated with `0.5N KMnO_(4)`. `11.45mL` of the standard `KMnO_(4)` was required for the reoxidation of all the rhendium of all the rehniuym to the perryhentate ion `Re_O_(4)^(-)` . Assuming that rhenium was the only element reduced, what is the oxisation state to which rhenium was reduced by the zinc column?
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  1. Correct Answer – `+3`

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