electrolysis in aqueous solution Flashcards
1
Q
what is added in aqueous solutions
A
OH- and H+ ions
2
Q
what is formed at the negative electrode
A
it depends on the order of reactivity
if the + ion is less reactive then hydrogen it will form at the electrode
3
Q
what is formed at the positive electrode
A
it is always OH- ions unless there is a group 7 ion present
4
Q
at the positive electrode how are particles released
A
in twos
5
Q
what is the half equation for Hydrogen reduction
A
2H+ + 2e –> H2
6
Q
what is the half equation for hydroxide oxidation
A
4OH- –> O2 + 2H2O + 4e
7
Q
what is the half equation for hydroxide oxidation
A
4OH- –> O2 + 2H2O + 4e
