Redox, reaction 5 (Redox-17) The following equations are given, already balanced reactions. Determine all oxidation numbers. Where does the oxidation take place, where is the reduction? If the oxidation number does not change, indicate this as well.
{a: } 3SO3^2- + Cr2O7^2- + 8H^+ -> 2Cr^3+ + 3SO4^2- + 4H2O {b: } N2H4 + 4Fe(CN)6^3- + 4OH^- -> N2 + 4Fe(CN)6^4- + 4H2O {c: } Ru + 6Cl^- + 3NO3^- + 6H^+ -> RuCl6^3- + 3NO2 + 3H2O {d: } ClO3^- + 3SO2 + 3H2O -> 3SO4^2- + Cl^- + 6H^+ {e: } 3H2S + 2HNO3 -> 2NO + 3S + 4H2O {f: } KSCN + 4H2O + 4I2 -> KHSO4 + 7HI + ICN
{a: } 3SO3^2- + Cr2O7^2- + 8H^+ -> 2Cr^3+ + 3SO4^2- + 4H2O |
{b: } N2H4 + 4Fe(CN)6^3- + 4OH^- -> N2 + 4Fe(CN)6^4- + 4H2O |
{c: } Ru + 6Cl^- + 3NO3^- + 6H^+ -> RuCl6^3- + 3NO2 + 3H2O |
{d: } ClO3^- + 3SO2 + 3H2O -> 3SO4^2- + Cl^- + 6H^+ |
{e: } 3H2S + 2HNO3 -> 2NO + 3S + 4H2O |
{f: } KSCN + 4H2O + 4I2 -> KHSO4 + 7HI + ICN |