Electrolysis Concepts & Review (Youtube Playlist Included)

https://youtube.com/playlist?list=PLSH4WOwvkQzwLl-G5CGJZAIsofkp4wrc0

Video Includes: Oxidation numbers, oxidation-reduction, what is oxidized and reduced, galvanic (voltaic) cells, standard cell potential, voltage, E cell, electrolytic cell, drawing, Molten salt, Electrolysis of water, Gibbs Free Energy, potentials, standard hydrogen electrode, and a crash course on electrochemistry.

Videos provided by CrashCourse, Mike Sugiyama Jones, The Organic Chemistry Tutor, Tony Hussey, Conquer Chemistry, Richard Thornley, Rachel Johnson, Professor Dave Explains.

Ox An Red Cat

Oxidation at the Anode

Reduction at the Cathode

S.H.E. is standard hydrogen electrode (2H+ + 2e- → H2)

Gibbs free energy = - n * F * E Cell

n = moles of e-
F = 96485C / mole e-
E Cell = cell potential

Galvanic cell	Electrolytic cell
Spontaneous	Non spontaneous
G < 0	G > 0
E Cell > 0	E Cell < 0
Thermodynamically favorable	Thermodynamically unfavorable
Positive ions leave the anode (-) and electrons travel to the cathode (+).	Positive ions flow to cathode (-).
Anions flow to anode.	External power source
Chemical energy → electrical energy	Electrical energy → chemical energy

Electrons always flow anode to cathode.

Charge = A*S

A = Current
S = Time in seconds

The Electrolysis of water

2H2O → 2H2 + O2

H+ goes to cathode to be reduced

Cathode: 2H+ + 2e- → H2

Anode: 2O2 → 2e- + O2

H2SO4 is added as a catalyst

Example of factor labeling:

# Minutes	60 Seconds	# Amps	C	1 mole e-	# mole element	molar mass g
	1 Minute		A * S	96485 C	# mole e-	1 mole