Talk:Lithium hydroxide

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Dropping lithium into water

"It is a violent reaction, and so much heat is given off that the hydrogen produced burns with a bright purple flame." Does the hydrogen really burn? I've tried dropping lithium into water just today, and although a lot of heat was produced, no combustion took place. --Bowlhover 00:19, 27 February 2007 (UTC)[reply]

All necessary requirements for combustion to start is fulfilled. You have fuel (H₂ produced by the reaction) oxidizer (O₂ from air) and heat. You did not dropp lithium into water in an inert atmosphere did you? —Preceding unsigned comment added by 83.227.130.26 (talk) 19:11, 28 July 2009 (UTC)[reply]

-I wouldn't call it an overly violent reaction. Lithium is the least reactive alkali metal. A large enough block in water would likely yield a flame, though. But you would need a significantly larger amount than you would of sodium or heavier alkali metals, and it may take time for the metal to heat up enough. —Preceding unsigned comment added by 129.108.192.90 (talk) 21:43, 23 November 2009 (UTC)[reply]

--My advice is to try it with warm or hot water. Jokem (talk) 15:58, 30 May 2013 (UTC) --Also, I don't think you would see a purple flame. I suggest this is a good description of what Potassium would do. Jokem (talk) 16:01, 30 May 2013 (UTC)[reply]

CO2 Scrubbber.

I suggest Lithium Oxide is lighter and thus would be better suited to spacecraft. It would absorb water from the air and convert to LiOH. Maybe the LiOH has to be moist to work and thus not be suitable. Would someone like to comment on that? Jokem (talk) 16:05, 30 May 2013 (UTC)[reply]

You can use lithium peroxide but I don't believe lithium oxide to be particularly hygroscopic, so it would only convert to lithium hydroxide slowly. Project Osprey (talk) 23:46, 5 February 2014 (UTC)[reply]