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19 Cards in this Set
- Front
- Back
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Oxidation |
The loss of electrons |
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Reduction |
The gain of electrons |
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Oxidising agent |
A substance that accepts electrons |
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Reducing Agent |
A substance that donates electrons |
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Anode |
The electrode where oxidation takes place |
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Cathode |
The electrode where reduction takes place |
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What are the standard conditions? |
Pressure = 1 atm. (101,3 kPa) Temp = 25°C. (273 K) Concentration = 1 mol.dm-3 |
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Energy conversion of a galvanic cell |
Chemical E -> Electrical E |
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What does a positive emf value indicate about the reaction? |
Reaction is Spontaneous - under standard conditions |
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So a negative - emf indicates that... |
The rxn is Non-Spontaneous |
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AnOx RedCat stands for ... |
Oxidation occurs @ the Anode Reduction occurs @ the Cathode |
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The electrode at which oxidation takes place is also called ... |
Reducing agent (where a substance Donates electrons) |
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How is a Galvanic cell's reaction sustained? |
Self-sustaining |
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Electrolytic Cell's reaction is sustained by? |
Supply of electrical energy |
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Electrolytic Cell's energy conversion: |
Electrical -> Chemical E |
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In a Galvanic Cell: What is the function of the salt bridge? |
? |
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Galvanic Cell: How does the salt bridge maintain neutrality in the 2 half-cells? |
? |
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Galvanic Cell In which direction does the current flow, in the external circuit? |
From the Anode to the Cathode |
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Galvanic cell: In which direction does the current flow, in the internal circuit? |
From the cathode, through the salt bridge, to the anode |
