Electrolysis of a molten sulphate

  • Thread starter yvan300
  • Start date
  • #1
13
0
During the electrolysis of a molten sulphate, for example Chromium sulphate. At the cathode, chromium forms but what forms at the anode? Is it sulphur dioxide and oxygen?
 

Answers and Replies

  • #2
Borek
Mentor
28,564
3,013
Peroxodisulfate? Why dioxide and not trioxide?

But honestly I am just thinking aloud.
 
Last edited by a moderator:
  • #3
13
0
Wow, that comment confused me more :D
 
  • #4
Borek
Mentor
28,564
3,013
Electrolytic oxidation of sulfate to peroxodisulfate in water solution is part of the old method of a hydrogen peroxide production, no idea if it will happen in molten state as well - but perhaps it can.

To get sulfur dioxide you need to reduce sulfur from VI to IV, and reduction at anode doesn't sound plausible to me. On the other hand oxidation of oxygen and production of SO3

2SO42- -> 2SO3 + O2 + 4e-

seems to be reasonable idea.

But this is just shifting of the atoms on paper, reality can be completely different.
 
Last edited by a moderator:
  • #5
13
0
Thanks :)
 

Related Threads on Electrolysis of a molten sulphate

  • Last Post
Replies
19
Views
4K
  • Last Post
Replies
4
Views
9K
Replies
1
Views
6K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
3
Views
8K
Replies
4
Views
6K
  • Last Post
Replies
3
Views
650
Replies
8
Views
4K
  • Last Post
2
Replies
28
Views
7K
  • Last Post
Replies
6
Views
2K
Top