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16 Cards in this Set
- Front
- Back
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Electrochemistry |
The relationship between chemical and electrical energy |
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Reduction |
The process of gaining electrons |
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Oxidation |
The process of losing electrons |
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OIL RIG |
Oxidation Is Loss Reduction Is Gain |
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Reducing Agent |
The substance/compound that is losing electrons |
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Oxidizing Agent |
The substance/compound that is gaining electrons |
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Oxidation Number |
The apparent charge on an atom, assuming that all chemical bonding is ionic |
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Redox reaction |
It is the transfer of electrons from one atom to the other. Involves a wet or damp environment |
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Redox half reaction |
Show half of the redox reaction showing either only the oxidation or reduction parts of reaction. Equations are balanced |
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Why do half reactions need to be balanced |
Due to the Electron Transfer Theory, which is an aspect of the Law of Conservation of Mass, which states that electrons lost/gained in one part of the reaction, must be gained/lost in another part of the reaction, respectively |
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Cell potential |
The amount of energy released of required during a redox reaction |
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What does it mean for a substance to be a very strong oxidizing agent? |
During a redox reaction, it can reduce very well |
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What happens when in a redox reaction the best overall oxidation and best overall reduction are both water? |
Then the atoms/ions/elements used in the reaction are not part of the redox reaction |
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What happens when ions that are not involved in the overall redox reaction? |
They are spectator ions |
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Electrolytic vs. Electrochemical cell |
Electrolytic cell requires energy and has a power supply, whereas electrochemical cell releases energy and has a load to release that energy to |
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What can be used as an electrolyte? Electrodes? Salt-bridge? |
Electrolyte - any ionic solution that will not have any unwanted reactions Electrodes - any solid that will not have any unwanted reactions. Cannot be ionic since it will dissolve and cannot be highly reactive Salt bridge - any ionic solution that won't have any unwanted reactions |
