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Chemistry

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    $\begingroup$ You can not only mentally but physically separate redox processes. However redox process must occur simultaneously, but there is no restriction which says that they must occur at the same spot or in the same beaker. Search salt bridge concept. $\endgroup$
    – ACR
    Commented May 26 at 14:59
  • $\begingroup$ The Wikipedia description of a half-cell might help: en.wikipedia.org/wiki/Half-cell $\endgroup$
    – Buck Thorn ♦
    Commented May 26 at 16:19
  • $\begingroup$ @BuckThorn So oxidation can occur without reduction? And they are then separate reactions? $\endgroup$
    – Evan Williams
    Commented May 26 at 20:15
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    $\begingroup$ EvanWilliams, Where do you see that oxidation can occur without reduction? It must occur simultaneously. The processes do not have to be localized. That is the basis of battery. If redox process had to occur at the same location, there will be no battery on Earth. $\endgroup$
    – ACR
    Commented May 26 at 23:11