Chemistry Chapter 18 Flashcards
A redox reaction can be used to…
generate an electric current.
What’s the reducing agent?
It’is the molecule being oxidized
What’s the oxidizing agent?
It’s the agent being oxidized
What happens to a molecule being oxidizied?
It loses electrons
What happens to a molecule being reduced?
It gains electrons
What’s a galvanic cell?
It’s a device in which chemical energy is changed into electrical energy
The opposite process is called electrolysis
Where does oxidation occur?
Oxidation occurs in the anode.
Where does reduction occur?
In the cathode
What’s cell potential/emf?
It’s the drivig force of the cell.
What’s the unit of emf?
Volts
What;s the difference between cells that are in standard equilbirum vs ones that aren’t in eq.?
Standard cells have the same molarity in both solutions (1M), whereas cells that aren’t at equilibrium have different molarities
Whar;s Nerst equation?
Why do we use Nersts’ equation?
What’s the difference between Ecell and E0Cell?
What are concentration cells?
They’re cells that have the same components but at different concentrations
