Write equations which represent the discharge at the cathode of the following ions: K^+, Pb^2+, Al^3+, and at the anode of: Br^-, O^2-, F^-.
At the cathode:
K = K^+ + 1 e^-1 (e^-1) signifies an electron
Pb = Pb^+2 + 2 e^-1
Al = Al^+3 + 3 e ^-1
At the cathode the metal ions are being oxidized through the loss of one or more electrons.
At the anode:
Br + 1 e^-1 = Br^-1
(The entire section contains 127 words.)
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