In a cell diagram, how do you determine which atom/molecule goes first?
EX. Test Question #6C
Cell Diagrams
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Re: Cell Diagrams
The anode is always on the left side of the cell diagram, and the cathode is on the right! Usually the parts of the cell diagram are written left to right, reactants going to products, but in some cases the order changes based on states of matter. Solids (such as inert electrodes) always go on the very outside (so first on the left side or last on the right side) and then gasses/liquids, and then aqueous solutions.
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Re: Cell Diagrams
The right side would be the anode and then left of the salt bridge would be the cathode. Then within those sections, the reactant is written first then the product.
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Re: Cell Diagrams
Remember to use mnemonic devices to help you determine which is the anode and which is the cathode!
LEO - Lose Electrons Oxidation
GER - Gain Electrons Reduction
or
OIL - Oxidation is Lose (electrons)
RIG - Reduction is Gain (electrons)
REDCAT - Reduction is the Cathode
LEO - Lose Electrons Oxidation
GER - Gain Electrons Reduction
or
OIL - Oxidation is Lose (electrons)
RIG - Reduction is Gain (electrons)
REDCAT - Reduction is the Cathode
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Re: Cell Diagrams
In general, have the anode go first and the cathode go next. The inert metals should go on the ends. For those in the middle, don't worry too much about the order as Dr. Lavelle has said that it is not that important.
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