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Precipitation of NH4Cl


Both HCl and Ammonium Hydroxide are corrosive and toxic.  Avoid exposure.


Chemicals and Solutions: 

Conc. HCl (hydrochloric acid)

Conc. NH4OH (aqueous ammonia)



Special 250 ml Erlenmeyer flasks with 34/35 and special stopper with fritted glass tips (2)



Remove the fritted glass stopper from the HCl flask and “waft” the tip near the opening of the ammonia flask.  A white cloud of ammonium chloride will form.



To schedule a demonstration, please send an email to the demonstration lab.



Eric Camp

Lecture Demonstration Technician

Bagley Hall 171

(206) 543-1606


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