Products at Electrodes from Electrolysis of Solutions Flashcards
1
Q
When is hydrogen produced at the cathode?
A
If the metal from the salt comes from groups 1 and 2 or is aluminium, and made on electrolysis of acids.
2
Q
When is a halogen produced at an unreactive anode?
A
If the salt is a halide.
3
Q
When is oxygen produced at an unreactive anode?
A
If the salt is a sulfate or nitrate, and made on electrolysis of hydroxides.
4
Q
When is a metal lost at the anode?
A
If it is the same as the salt.
