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A solution of Na2SO4 in water is electrolysed using inert electrodes. The product at cathode and anode are respectively

(a) H2, O2

(b) O2, H2

(c) O2, Na

(d) O2, SO2

choose and explain

pratiksha agarwal , 13 Years ago
Grade 12
anser 2 Answers
Roshan Mohanty

H +  + 2 e -  --->  2H2                  Cathode because it is a reduction reaction.

2H2O  -->  O2  +  4e -  +  4H +     Anode because it is an oxidation reaction.


so ans is A

ApprovedApproved
Last Activity: 13 Years ago
Vikas TU

Na2+ + 2e'' -> Na (Anode)

2SO4 2- -> 2SO3 + O2 + 4e'' (Cathode)

The answer is C.

 

plz approve!

Last Activity: 13 Years ago
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