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21 Cards in this Set
- Front
- Back
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What happens when you are oxidized?
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Lose electrons, and gain oxygen, lose hydrogens
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What happens when you are reduced?
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You gain electrons, lose oxygens, gain hydrogens
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What is an oxidizing agent?
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One that is reduced, causes something else to be oxidized
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What is an reducing agent
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One that is oxidized
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Do metals ever have a negative sign
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No
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What is a galvanic/voltanic cell?
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A spontaneous redox rxn
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What is a electrolytic cell?
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A non-spontaneous rxn
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Draw out the galvanic cell notation?
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anode/anode ion// cathode ion/ cathode
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Where does reduction take place, at cathode or anode?
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Cathode
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Where does oxidation take place at anode or cathode?
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At anode
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How is the Ecell always written?
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It is always written as a reduction potential
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If Ecell is less than 0, is it spontaneous?
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NO
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What is the equation to check spontanaiety of a electrochemical cell?
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Delta G= nF*Ecell
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When balancing the coeficients to get a balanced reaction, do you ever multiply the Ecell by that number?
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Never, no`
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If you have a more negative reduction potential, what do you have?
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A stronger reducing agent
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In an electrolytical cell, what happens?
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You must force a reaction against their will and anode is positive and cathode is negative
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What is a faraday
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A faraday is 1 mole of electrons/96,500 C
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What always forms at the cathode
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Solid metals
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What can cause battery death
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Hot weather-lose solution
Cold weather-solution becomes less viscous Run out of materials Cut salt bridge-makes capacitor Cut the wire-battery dies emmdiately |
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What moves the charge in cells
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The salt bridge
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Where is H2(g) made ?
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AT THE CATHODE
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