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49 Cards in this Set
- Front
- Back
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Cells are |
Containers of liquid with electrodes |
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Another name for voltaic cells |
Galvanic cells |
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a salt bridge or porous cups are used to |
Allow for unrelated ions to move to allow for balance of charge |
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A battery is |
A group of two or more electric cells (galvanic cells) connected to each other in series |
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Each electric cell is composed of |
Two electrodes and one electrolyte |
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Electrodes are |
Solid electrical conductors |
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Electrolytes are |
Aqueous electrical conductors |
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In an electric cell or batter the cathode is the ________ and the anode is the _________ |
Positive electrode, negative electrode |
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Electricity is |
The flow of electrons |
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Electric current is |
The rate of flow of charge pass a point in an electrical circuit |
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Electric current is |
The rate of flow of charge pass a point in an electrical circuit |
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Electric potential difference (voltage) |
Energy difference per unit charge |
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Power of a cell or battery is |
The rate at which it produces electrical energy |
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Power is measured in |
Watts |
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Components of an Electric Cell |
-an electric cell must have two electrodes and an electrolyte -an electrode is a solid conductor -an electrolyte is an aqueous conductor - the cathode is the electrode labelled positive - the anode is the electrode labeled negative - the electrons all flow through the extern circuit from the anode to the cathode |
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secondary cells can be recharged using |
Electricity to revere the chemical reaction when electricity is produced by the cell |
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Fuel cells |
An electric cell that produces electricity by the reaction of fuel that is continuously supplied to keep the cell operating |
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Fuel cells |
An electric cell that produces electricity by the reaction of fuel that is continuously supplied to keep the cell operating |
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Voltaic cell |
Arrangement of two half-cells separated by a porous boundary that spontaneously produces electricity |
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In a voltaic cell electrons pass from the _______ to the ________ through a __________ |
RA, OA, external circuit |
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Shorthand cell notation |
Anode(-)|electrolyte||electrolyte|cathode(+) |
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The strongest oxidizing agent undergoes __________ at the ___________ |
Reduction, cathode |
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The strongest oxidizing agent undergoes __________ at the ___________ |
Reduction, cathode |
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The strongest reducing agent undergoes _________ at the _____________ |
Oxidation, anode |
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Each half cell contains |
One electrode and electrolyte |
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Cathode: electrons are transferred _______ solution |
Into the |
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Cathode: electrons are transferred _______ solution |
Into the |
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Anode: electrons are transferred _______ solution |
Out of |
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In voltaic cells electrons travel from |
RA to OA // ANODE TO CATHODE |
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Two inert electrodes commonly used |
Carbon (graphite) rode or platinum metal |
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Cathode sign |
Positive |
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Cathode sign |
Positive |
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Anode sign |
Negative |
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Cathode sign |
Positive |
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Anode sign |
Negative |
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Internally, anions move towards _______ and cations move towards __________ |
Anode, cathode |
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Standard cell potential |
Energy difference between cathode and anode |
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Electrolytic cell |
Non-spontaneous redox reaction is forced to occur; combination of two electrodes, an electrolyte and an external power source |
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Electrolysis |
Process of supplying electrical energy to force a non-spontaneous redox reaction to occur |
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difference between spontaneity of voltaic cell and electrolytic cell |
voltaic: spontaneous electrolytic: non spontaneous |
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difference between spontaneity of voltaic cell and electrolytic cell |
voltaic: spontaneous electrolytic: non spontaneous |
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Difference in standard cell potential of voltaic and electrolytic cell |
Voltaic: positive Electrolytic: negative |
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Cathode of electrolytic cell is |
Negative electrode |
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Cathode of electrolytic cell is |
Negative electrode |
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Anode of electrolytic cell is |
Positive electrode |
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Faradays law |
The mass of an element produced or consumed at an electrode is directly proportional to the time the cell operates, as long as the current is constant |
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Faradays law |
The mass of an element produced or consumed at an electrode is directly proportional to the time the cell operates, as long as the current is constant |
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Faraday's constant |
9.65 x 10^4 C/mol |
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Ne- = |
Q/F or It/F |
