ELECTROCHEMICAL CELLS
CONTENT
- Meaning of Electrochemical Cell
- Some Parameters Associated with Electrochemical Cell
- Measurement of Standard Electrode Potential
- Drawing of Cell Diagram and Writing Cell Notation
- E.M.F of Cells and Application of Electrochemical Cells
- The Relationship between E.M.F and △G
Meaning of Electrochemical Cell
Electrochemical cell is a device that converts chemical energy to electrical energy.
Some Parameters Associated with Electrochemical Cell
1. Standard Hydrogen Electrode
The standard hydrogen electrode consists of hydrogen gas at 25oC and one atmospheric pressure bubbling around an inert platinum electrode in contact with one-molar solution of hydrogen ions i.e \(H_{(aq)}^+/H_{2(g)}\) system. It is the reference standard by which the standard electrode potential of a metal ions/metal system is measured against. The standard hydrogen electrode potential has been given assigned a value of zero.
2. Standard Electrode Potential (Eo)
Standard electrode potential of a metal ions/metal system is the potential difference set up between the metal and one-molar solution of its ions at 25oC (arbitrarily taking the standard electrode potential of hydrogen ions/hydrogen gas system as zero volts.
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Halima Ahmadu
Zainab Ahmadu
Favour nwankwo
Idanesi Akpoghome
Maryam
Sadiq Barau