2014-10-27
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NOTE: REDUPLOADED DUE TO AN ERROR IN TERMINOLOGY.
Warning: H2S is EXTREMELY toxic. Do NOT do this indoors and avoid using H2S if you can.
In this video, I generate hydrogen sulfide using hydrochloric acid (HCl) and iron sulfide (FeS).
I bubble the gas through a saturated solution of copper sulfate to limit the amount of H2S released into the environment and to demonstrate it's (old) use as an analytical chemistry technique.