What is the half-reaction occurring at the cathode in the following reaction? Cr2O7-2 + 6 S2O3-2...

Question

Question

What is the half-reaction occurring at the cathode in the following reaction?

Cr₂O₇^-2 + 6 S₂O₃^-2 ---> 2 Cr ⁺³ + 3 S₄O₆^-2

Answer 1

Answer #1

at cathode reduction takes place,

in above reaction reduction half reaction as follows

Cr2O7^-2 -------> 2Cr⁺³

Cr2O7^-2 + 14H⁺ + 6e^- -------> 2Cr⁺³ + 7H2O complete balanced reaction

Answer 2

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