Which element is reduced in the following reaction? \[ \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}+6 \mathrm{~S}_{2} \mathrm{O}_{3}{ }^{2-}+14 \mathrm{H}^{+} \rightarrow 2 \mathrm{Cr}^{3+}+3 \mathrm{~S}_{4} \mathrm{O}_{6}{ }^{2-}+7 \mathrm{H}_{2} \mathrm{O} \] Select one: A. 0 B. \( \mathrm{S}_{4} \mathrm{O}_{6}{ }^{2-} \) C. \( \mathrm{Cr} \) D. \( \mathrm{S} \) E. H
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Reduction refers to the gain of electrons by an atom or ion. In a redox reaction, one species is oxidized (loses electrons), and another is reduced (gains electrons). Show more…
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