Electrochemical cells
Electrochemical cells
Formula
E°cell = E°(cathode) − E°(anode)
Real World
The Daniell cell — used historically by early telegraph companies — consists of a zinc anode in ZnSO₄ and a copper cathode in CuSO₄, producing around 1.1 V to power the circuit.
Exam Focus
Use cell notation (anode | electrolyte || cathode) precisely; 'describe' questions require correct direction of electron flow.
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