Which atom has a change in oxidation number of -3 in the following redox reaction?
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Which atom has a change in oxidation number of -3 in the following redox reaction? K2Cr2O7 + H2O +S→KOH + Cr2O3 + SO2 A.K B.Cr C.O D.S Thanks!
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Answer:
ox. No. of K does not change ox. No. of O does not change ox. No. of S changes from 0 to +4 ox. No. of Cr changes from +6 to +3 it's B = Cr
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