On balancing the given redox reaction,
\(\mathrm{aCr}_2 \mathrm{O}_7^{2-}+\mathrm{bSO}_3^{2-}(\mathrm{aq})+\mathrm{cH}^{+}(\mathrm{aq}) \rightarrow\) \(2 \mathrm{aCr}^{3+}(\mathrm{aq})+\mathrm{bSO}_4^{2-}(\mathrm{aq})+\frac{\mathrm{c}}{2} \mathrm{H}_2 \mathrm{O}(\ell)\)
the coefficients a, b and c are found to be, respectively-
1
1, 3, 8
2
3, 8, 1
3
1, 8, 3
4
8, 1, 3
5
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