Question: The gas evolved at the anode when K 2 SO 4 (aq) is electrolyzed between Pt electrodes is most likely to be (a) O 2

The gas evolved at the anode when K2SO4(aq) is electrolyzed between Pt electrodes is most likely to be 

(a) O2; 

(b) H2;

(c) SO2;

(d) SO3;

(e) A mixture of sulfur oxides.

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