Cr2O7^{2-} + 14H^{+} + 6e = 2Cr^{3+} + 7H2O |1
2I^{-} - 2e = I2 |3
Cr2O7^{2-} + 14H^{+} + 6I^{-} = 2Cr^{3+} + 7H2O + 3I2
K2Cr2O7+6NaI+7H2SO4=Cr2(SO4)3+I2+K2SO4+3Na2SO4 +7H2O
K2Cr2O7+6NaI+7H2SO4=Cr2(SO4)3+3I2+K2SO4+3Na2SO4+7H2O
Cr(6+)+3e=Cr(3+)|3| 2
2I(-)-2e=I2(0) |2| 3
Cr2O7(2-)+6I(-)+14H(+)=2Cr(3+)+3I2+7H2O
Cr2O7^{2-} + 14H^{+} + 6e = 2Cr^{3+} + 7H2O |1
2I^{-} - 2e = I2 |3
Cr2O7^{2-} + 14H^{+} + 6I^{-} = 2Cr^{3+} + 7H2O + 3I2
K2Cr2O7+6NaI+7H2SO4=Cr2(SO4)3+I2+K2SO4+3Na2SO4 +7H2O
K2Cr2O7+6NaI+7H2SO4=Cr2(SO4)3+3I2+K2SO4+3Na2SO4+7H2O
Cr(6+)+3e=Cr(3+)|3| 2
2I(-)-2e=I2(0) |2| 3
Cr2O7(2-)+6I(-)+14H(+)=2Cr(3+)+3I2+7H2O