Balance the following equation in acidic conditions.

Question

S2O3^2- +Cu ^2+ > S4O6^2- +Cu^+

Answer 1

2S2O3^2- +2Cu ^2+ > S4O6^2- + 2Cu^+

Answer 2

Oxidation-Reduction Balancing

Acidic Solution

Cr2O7 + C2H4O -> C2H4O2 + Cr3+