Voltaic Cells and Cell Notation
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16 Terms
Voltaic Cells
Electrochemical cells that use an oxidation-reduction reaction to generate an electric current are known as galvanic or voltaic cells.
Electrolytic cells
In other electrochemical cells an externally supplied electric current is used to drive a chemical reaction which would not occur spontaneously
In _____, electricity is produced spontaneously from a redox reaction
voltaic cells
In _____, electricity is used to force chemicals to undergo a redox reaction
electrolytic cells
It is used to allow for unrelated ions to move to allow for balance of charge
A salt bridge or porous disk (cup).
The redox reaction is…
the driving force on electrons to move them through the wire
electric potential difference
the energy difference per unit charge
Electric current
rate of flow of charge in a circuit
power
the rate at which electrical energy is produced
the electrical depends on the the type of…
electrodes and electrolytes used in the cell
a battery
a group of galvanic cells connected in series
the potentials of the individual cells add…
to give the total battery potential
secondary cells can be…
recharged by adding electricity
Anode
the electrode where oxidation occurs
cathode
the electrode where reduction occurs
Salt bridge
prevents build up of ions on one side of the cell and balances the charge