Electrochemistry Test
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Created by:
hurricane14 on March 16, 2012
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17 terms
Terms | Definitions |
|---|---|
 Oxidation | loss of electrons |
| Reduction | gain of electrons |
| Oxidizing agent | something that is being duced by taking electrons from something else |
| Reducing agent | something that is being oxidized by reducing something else |
| Oxidation # rules | a) elements are zero b) in componds i) oxygen is -2 (except in peroxide) ii) group 1 and group 2 are +1 and +2 iii) Hydrogen is +1 (unless with metals) |
| Anode | (-) where oxidation occurs and where electrons are produced |
| Cathode | (+) where reduction occurs and where electrons are used |
| Relatively negative Ered means... | "likes" to lose electrons (oxidation) -> anode |
| Relatively positive Ered means... | "likes" to gain electrons (reduction) -> cathode |
| Electrons go from _______ to _______. | Electrons go from ANODE to CATHODE. |
| If you get a negative net Ecell than... | the equation is "backwards." |
| When at equilibrium cells are ______ and voltage is _______. | When at equilibrium cells are FLAT and voltage is ZERO. |
| Ecell = | Ecell = E˚cell - 0.0592/n * logQ |
| E˚cell = | RT/nF *lnK |
| Charge (Q) = | Q=It |
| Faraday's constant = | 96,500 C/mols of electrons |
| ΔG˚= | ΔG˚= -nFE˚ ΔG˚= -RTlnK |
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