Remember ANODE ARROW, because the arrow comes sooner in the anode equations.
You need the substance, eg Cl- (it's always negative at the anode) then the arrow then the substance, eg Cl2 and electrons e-
2Cl- --> Cl2 + 2e- Remember to make it balance because Chlorine is diatomic - it always forms as Cl2
At the cathode, the arrow comes at the end. The substance is always positive.
2H+ + 2e- --> H2. Again, hydrogen is diatomic so make it balance.
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