AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

AP Chem Redox/Electrochem Flashcards

Terms : Hide Images
5854466042Electrochemistrythe study of the interchange of chemical and electrical energy0
5854466043OIL RIGoxidation is loss, reduction is gain (of electrons)1
5854475630Salt bridgeBridge between cells; provide ions to balance the charge2
5854476636Faraday's Law:The amount of a substance being oxidized or reduced at each electrode during electrolysis is directly proportional to the amount of electricity that passes through the cell.3
5854477109Reductionthe gain of electrons reduction of charge4
5854478751Oxidation numberthe assigned charge on an atom5
5854479515Oxidizing agent (OA)the species that is reduced and thus causes oxidation6
5854486816n in the Nernst equationn = the # of electrons exchanged in the balanced redox equation Got it?7
5854488209Q in the Nernst equationQ = reaction quotient (Use the coefficients) [products] / [reactants] (I don't actually know what this means)8
5854492816F in the Nernst equationFaraday constant - i'm sure it's on detail somewhere9
5854495760R in Nernst equation9.315 J/K x mol Gas constant10
5854477892Nernst EquationE = E cell - (RT/nF ) lnQ Fun fact! When the cell is not at standard conditions, use this equation11
5854480183Reducing agent (RA)the species that is oxidized and thus causes reduction12
5854488778inert electrodesused when a gas is involved OR ion to ion involved such as Fe3+ being reduced to FE2+ rather than Fe0. Made of Pt or graphite13
5854494338electron flowalways from anode to cathode (through the wire)14
5854498651voltmetermeasures the cell potential (emf) usually is measured in volts15
5854494921standard cell notation (line notation)anode/solution//cathode solution/cathode ex. Zn/Zn2+(1.0M)//Cu2+(1.0M)/Cu16
5854491485salt bridgea device used to maintain electrical neutrality in a galvanic cell. may be filled with agar which contains a neutral salt or it may be replaced with a porous cup.17
5854482465Galvanic (voltaic) cellsspontaneous chemical reactions (battery)18
5854486934cathodethe anode where reduction occurs may become larger over time as ions from the solution plates onto it19
5854492653number of coulombsamp ( I ) x time20
5854488833Formula weightgrams/mole21
5854483844Electrolytic cellsnon-spontaneous require external electron source (DC power source)22
585450362023
5854484900anodethe electrode where oxidation occurs may become smaller over time as it falls into solution24
5854487262Balanced redox equationsnumber of moles of electrons/mole of substance25
5854476363Lead- storage batteriesPb anode, PbO2 cathode, H2SO4 electrolyte26
5854489107electroplatingone type of application of electrolytic cells; it applies a thin layer of an expensive metal to a less expensive one27
5854476356Oxidationthe loss of electrons increase in charge28
5854491820Electrons in a voltaic/galvanic cell always flow from __________ to _____________Anode to Cathode29
5854489438Reduction occurs at the...Cathod (RED CAT) - mass increase30
5854487556Oxidation occurs at the...Anode (AN OX) - mass decrease31
5854484341Faraday96,500 Coulombs/mole of electrons32
58544829871 Amp1 Coulomb/second33
5854502080Voltmeter- measures electrical potential, some energy is lost as heat which keeps the voltmeter reading a tad lower than the actual or calculated voltage.34
58544803621 Volt1 Joule/Coulomb35
5854495918Cell potential (Ecell, Emf)It is a measure of the electromotive force or the "pull" of the electrons as they travel from the anode to the cathode36
5854486602Batteriescells connected in series; potentials add together to give a total voltage37
5854488151Faraday96500 Coulombs/mole of electrons38
58544873541 amp1 Coulomb/second39
5854478986dry cell batteriesacid versions: Zn anode, C cathode; MnO2 and NH4Cl paste alkaline versions: some type of basic paste, ex. KOH Nickel - Cadmium - anode and cathode can be recharged40
5854492203Porous disk or cupallows both cells to remain neutral by allowing ions to flow41
58544868381 volt1 Joule/Coulomb42
5854482818Fuel cellsreactants continuously supplied (spacecraft - hydrogen and oxygen)43
5854485143Faraday's lawthe amount of a substance being oxidized or reduced at each electrode during electrolysis is directly proportional to the amount of electricity that passes through the cell44
5854490677corrosionprocess of returning metals tot heir natural state, the ores45

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!