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Essay Galaxy - Electrochemistry
Electrochemistry
Electrochemical processes are uniformly based on redox
(reduction/oxidation) reactions. Think of it as the opposite of a battery.
In a battery the chemical process is spontaneous and produces electrical
energy, while in an electrolysis you need to put electrical energy in to
run the chemical process.
An electrolytic cell works on the same principles as any other electrical
device: electrons are stripped away from the anode and transferred to the
cathode. In an electrolytic reaction, the desired substance appears at one
or the other electrode; which electrode depends on whether the substance is
being oxidized or reduced.
For example, in the electrolysis of water hydrogen is being reduced and
bubbles out at the cathode; oxygen is being oxidized and collects at the
anode. (This sounds strange, but if you remem....
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Number Of Pages: 2 |
Number Of Words: 461 |
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