Electrolysis

Question 1

Water

Answer 1

2H2O>2H2+O2
A: 2H2O>O2+4H++4e
C: 2H2O+2e>H2+2OH-

Question 2

Molten Salt

Answer 2

2NaCl>2Na+Cl2
A: 2Cl->Cl2+2e
C: Na++1e>Na

Question 3

Brine/Saltwater

Answer 3

2NaCl+2H2O>2NaOH+Cl2+H2
A: 2Cl->Cl2+2e (some O2)
C: 2H2O+2e>H2+2OH-
(some Na+ spectator)

Question 4

Electroplating

Answer 4

A: Ag>Ag++1e
C: Ag++1e>Ag