half equations Flashcards
1
Q
what can you add to half equations to make it balance completely?
A
● electrons
● water
● hydrogen ions (unless reaction is taking place under alkaline conditions - add OH- instead)
2
Q
what are the steps for half equations?
A
● 1. find oxidation states
● 2. check balanced on both sides
● 3. electrons
● 4. balance hydrogen with H+
● 5. check using overall charges on each side
e.g.
2BrO3 + 10e- + 12H+ -> Br2 + 6H2O
