Something like the copper cycle or alum synthesis labs?

I teach an introductory inorganic course at the first year level.  One of the key skills I want them to master in those first weeks of lab is the idea of turning a chemical description into equations (plus at the same time learning basic lab technique like filtering and observing).  I have used both the copper cycle lab and an alum synthesis lab for this purpose in the past but I am getting a bit tired of those and looking for something new.

Hilary Eppley / DePauw University Wed, 08/09/2017 - 16:26
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HBr (g)

Submitted by Chip Nataro / Lafayette College on Tue, 01/22/2013 - 13:19

Does anyone have any experience generating small quantitites of anhydrous HBr? NaBr and ortho-phosphoric acid did not seem to work overly well. At least I don't seem to be generating much of the gas. I have used NaCl and H2SO4 to generate HCl in the past and that is a very rapid and vigorous reaction.

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