A white ring of solid ammonium chloride forms where the two gases meet inside the tube. If necessary, protect non-glass surfaces of an overhead projector with clear plastic. Dip one Q-tip into ...

can react to form ammonium chloride again. This slideshow shows a reversible reaction involving white anhydrous copper(II) sulfate and blue hydrated copper(II) sulfate. The equation for this is ...

Number of allergic skin reactions at challenge 1 0/25 0/25 ... 2,3-dihydroxypropyl-trimethyl ammonium chloride; TEA-Quat = dialkyl ester of triethanol ammonium methyl sulfate.

Ammonium ions (NH 4 +) – found in ammonium compounds such as ammonium chloride, ammonium nitrate ... of the ions with sodium hydroxide. This reaction produces ammonia gas, as shown in the ...