Asked by Sam

Current is applied to an aqueous solution of calcium sulfide. Multiple choice help please??!

What is produced at the cathode?
A) H2(g)
B) S(s)
C) O2(g)
D) Ca(s)

What is produced at the anode?
A) O2(g)
B) H2(g)
C) Ca(s)
D) S(s)
Answered by DrBob222
I don't know about the over voltage associated with these ions. Over voltage not withstanding, H2 at the cathode and O2 at the anode. S(s) (from S^2-) is VERY close.
Answered by OHernandez
H2 (g) is produced at the cathode. S (s) is produced at the anode. Just compare reduction potentials.
Answered by Baeley
H2 (g) at cathode
S (s) at anode
Answered by anny;oa
dumbo kiddos
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