14: Redox II Flashcards
1
Q
What are the three definitions of oxidation
A
- Addition of oxygen
- Loss of hydrogen
- Loss of electrons
2
Q
What are the three definitions of reduction
A
- Loss of oxygen
- Addition of hydrogen
- Gain of electrons
3
Q
What does the position of equilibrium/electrode potential depend on
A
- Temperature
- Pressure of gases
- Concentration of reagents
4
Q
What are standard conditions for comparing electrode potentials
A
- Ion concentration of 1.00 mol dm-3
- Temperature of 298K
- Pressure of 100kPa
5
Q
What are electrode potentials measured relative to, and what is its value
A
Standard hydrogen electrode, 0.00V
6
Q
Define standard electron potential
A
The potential difference (voltage) produced when a standard half cell is connected to a standard hydrogen cell under standard conditions
7
Q
What does the standard hydrogen electrode include
A
- Hydrogen gas in equilibrium with H+ ions of concentration 1.00 mol dm-3 (at 100 kPa)
- An inert platinum electrode that is in contact with the hydrogen gas and H+ ions
8
Q
What are the three types of half cells that can be connected to a hydrogen cell to measure standard electron potential
A
- A metal/metal ion half cell
- A non-metal/non-metal ion half cell
- An ion/ion half cell
