In a galvanic cell, the direction of the flow of electrons __________ .
A
is always from left to right
B
is always from cathode to anode
C
depends on the cathode and anode present
D
is always from the oxidized species to the reduced species
E
is across the salt bridge
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1
Understand that a galvanic cell is an electrochemical cell that converts chemical energy into electrical energy through spontaneous redox reactions.
Identify the anode and cathode in the galvanic cell. The anode is where oxidation occurs, and the cathode is where reduction takes place.
Recall that electrons flow from the anode to the cathode in a galvanic cell. This is because oxidation at the anode produces electrons, which then travel through the external circuit to the cathode.
Recognize that the flow of electrons is always from the oxidized species (at the anode) to the reduced species (at the cathode). This is a fundamental principle of redox reactions in galvanic cells.
Note that the salt bridge in a galvanic cell allows ions to flow between the two half-cells to maintain electrical neutrality, but it does not affect the direction of electron flow.