Cell schematics

Definition

Cell schematics are symbolic representations of electrochemical cells used to describe the components and reactions occurring within them. They illustrate the arrangement of electrodes, electrolyte solutions, and the direction of electron flow.

5 Must Know Facts For Your Next Test

1. Cell schematics use vertical lines '|' to represent phase boundaries and double vertical lines '||' to represent a salt bridge or membrane.
2. The anode (oxidation site) is typically written on the left side, while the cathode (reduction site) is on the right side.
3. Standard cell notation follows the format: Anode | Anode solution || Cathode solution | Cathode.
4. Inert electrodes such as platinum (Pt) are included in the schematic if one or both half-cells do not involve a solid metal electrode.
5. Cell potential (voltage) can be determined by subtracting the anode's standard reduction potential from the cathode's standard reduction potential.

Review Questions

• What symbols are used in cell schematics to represent phase boundaries and salt bridges?
• In cell schematics, which side typically represents the anode and which side represents the cathode?
• How do you denote inert electrodes in a cell schematic?

Related terms

Anode: The electrode where oxidation occurs in an electrochemical cell.

Cathode: The electrode where reduction takes place in an electrochemical cell.

Salt Bridge: A device used in galvanic cells to maintain electrical neutrality by allowing ions to flow between half-cells.