An acid solution of KReO_(4) samplecontaining 26.83mg of combined rhenium was reduced by passage through a column of granulated zinc. The effulent solution includingthe washings from thecolumn, was thentitratedwith 0.5N KMnO_(4). 11.45mL of the standard KMnO_(4) was requiredfor the reoxidation of all the rhendiumof all the rehniuym to the perryhentate ion Re_O_(4)^(-) . Assumingthat rhenium was the only element reduced, what is the oxisation state to whichrheniumwas reduced by the zinc column?

An acid solution of KReO_(4) samplecontaining 26.83mg of combined rhen

1.	An acid solution of KReO_(4) samplecontaining 26.83mg of combined rhenium was reduced by passage through a column of granulated zinc. The effulent solution includingthe washings from thecolumn, was thentitratedwith 0.5N KMnO_(4). 11.45mL of the standard KMnO_(4) was requiredfor the reoxidation of all the rhendiumof all the rehniuym to the perryhentate ion Re_O_(4)^(-) . Assumingthat rhenium was the only element reduced, what is the oxisation state to whichrheniumwas reduced by the zinc column?
Answer» ANSWER :`+3`