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If you try to get electricity fom a lemon is it from the acidity?
Question Date: 2009-03-13
Answer 1:

Yes, if you make a lemon-based battery, it is the acidity of the lemon that causes the electricity to flow. You may have also heard of making a battery out of a potato. This works, but since potatoes aren't as acidic as lemons, lemons work better.

The exact details can be tricky, but in short, the acidity of the lemon makes it a lot easier for electrons to flow from the Zinc to the Copper.

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