Ammonia is added to solutions of cobalt, nickel, and copper 2+ cations. First formation of the hydroxide precipitate is seen, then of the ammonia complex. Pour 0.1M solutions of Cu2+, Co2+, and Ni2+ ...

Ammonia, NH 3, is an alkaline gas and so turns damp red litmus paper blue. Ammonium ions (NH 4 +) – found in ammonium compounds such as ammonium chloride, ammonium nitrate and ammonium sulfate ...

It doesn’t require special storage techniques as hydrogen does and it has ten times the energy density of a modern lithium-ion battery ... combination of ammonia and coal gas.

Reaction with acid liberates hydrogen cyanide gas, one of the most toxic and rapidly acting poisons. Solutions must be kept basic (pH>8). Gloves are necessary to prevent absorption through the skin.