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So recently I have been trying to get elemental Calcium but I only found a cheap solution in electrolysis of molten $\ce{CaCl2}$ (thats because calcium chloride is very cheap) and I am not sure If it would work Can you give me advise? I also wonder If it would work on $\ce{Ca(OH)2}$?

Would the reaction be like

$$\ce{Ca(OH)2 -> Ca + 2 OH}$$

and

$$\ce{CaCl2 -> Ca + Cl2}$$

or something else ( I am 13 so I dont know much about chemistry )

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    $\begingroup$ It's much more efficient to buy calcium than to obtain it yourself by electrolysis... $\endgroup$ – Zhe Nov 28 '18 at 16:50
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You'll get nowhere with calcium hydroxide. Try to melt it, and it gives off water, becoming calcium oxide. Try to melt that, and you'll melt your container first. And your electrodes.

Electrolysis of calcium chloride works commercially, but it's very difficult in a home lab. I've seen discussions from people who have tried, but I don't think any of them were successful.

Please don't try to do this if you don't have much experience with chemistry. Start with something like copper-plating; copper sulfate is easy to get, and you can do it with an aqueous solution at room temperature. Working with molten salts and alkali/alkaline-earth metals is a really bad idea if you're just starting to learn.

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