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

Question

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

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

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

Answers

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


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