jowrose Posted January 11, 2006 Posted January 11, 2006 I recently tried using ammonia as a reactant for a reaction (no reaction occurred), and placed the test tube in my homemade storage box/ fume hood. The next day, some what crystals had formed at the top of the test tube. I am almost sure that no reaction occurred (at least in the test tube), as I have gotten these same crystals with other ammonia experiments. They are perfectly white, and have a texture almost like that of a feather. Does anyone know what these crystals are?
jdurg Posted January 11, 2006 Posted January 11, 2006 What was contained in the test tube and what else was present in the fume hood? I can assure you that the crystals aren't ammonia because ammonia is a gas at STP and would not crystalize under any conditions one would find inside their home lab.
jowrose Posted January 11, 2006 Author Posted January 11, 2006 I know, I was doing some research and found it takes massive amounts of pressure to get a solid (or -75 degrees C)... Not something I could create in my basement... I believe there were small amounts of HCl gas, but other than that I would think water vapor would be the only contaminant. I will take a look though and make sure.
YT2095 Posted January 11, 2006 Posted January 11, 2006 it`s very likely a mixture of Ammoinium chloride and perhaps a trace of ammonium carbonate then.
Ilja Posted January 11, 2006 Posted January 11, 2006 it`s very likely a mixture of Ammoinium chloride and perhaps a trace of ammonium carbonate then. Agree , it occures when uve got ammonia and hcl standing next to each other.
jdurg Posted January 11, 2006 Posted January 11, 2006 Yup. Classic chemistry demo; letting HCl and NH3 gas interact to form NH4Cl crystals.
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