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What solvent could I use for displacement reactions whereby more reactive elements would be used in their elemental form to displace less reactive elements from their hydroxide salts (including for those elements that react with water, such as using elemental Ca to precipitate elemental Ba from Ba(OH)2.8H2O )?

The solvent cannot be water else some elements would react with free water molecules instead of precipitating. I thought of using an alcohol (as Methanol) but I read on wikipedia that "alcohols corrode some metals, particularly aluminium", which makes them unsuitable.

Please note that I'm new to chemistry so I might be doing wrong assumptions here which you are welcome to point out.

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    $\begingroup$ No solvent at all. $\endgroup$ – Mithoron Jul 10 at 18:36
  • $\begingroup$ @Mithoron What do you mean? Do I not need a solvent to bring the more reactive element to displace the less reactive element? And to separate them (by precipitation)? $\endgroup$ – Veritas Jul 10 at 18:48
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    $\begingroup$ Ba is produced by reduction of it's oxide using Al or Si in high temp. producing pure, molten Ba, or even vapor which is then condensed. en.wikipedia.org/wiki/Barium#Occurrence_and_production $\endgroup$ – Mithoron Jul 10 at 19:15
  • $\begingroup$ @Mithoron Is there not way to do the same in solution (of course not water) for elements that react with water? $\endgroup$ – Veritas Jul 10 at 19:23
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    $\begingroup$ Perhaps something like that could be done in a right crown ether, Reactions in solvents may be easier, but high enough temperature works as well. $\endgroup$ – Mithoron Jul 10 at 19:32

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