Electrochemistry Flashcards
1
Q
Voltaic Cell
A
Converts chemical enery to electrical spontaneously
Anode is negative, oxidaton occurs in anode
Cathode is posisitve, reduction occurs in cathode
2
Q
Electroytic cell
A
Reqieres elctrical nergy to drive a nonspontaneous reaction
Anode is positive
Cathode is negative
3
Q
Daniell Cell
A
(Zn - Cu)
Anode:
Zn(s) → Zn²⁺(aq) + 2e⁻; mass of zinc electrode decreases
Cathode:
Cu²⁺(aq) + 2e⁻ → Cu(s);
mass of copper electrode increases
4
Q
more positive reduction potential means the species i more _______ reduced
A
easily
5
Q
Faraday const
A
1 F = 96,485 C of charge = 1 mol of electons
6
Q
Nernst equation
A
E = Eo - 0,0592/n * logQ
Q - reaction quotient
7
Q
Oil Rig
A
Oxidation is losing
reduction is gaininng(e-)
8
Q
Oxidation
A
M−>M^z+ +ze−
9
Q
Reduction
A
M^z+ +ze− -> M
