A few drops of dilute sodium hydroxide solution react to form a white precipitate with aluminium ions, calcium ions and magnesium ions. However, if excess sodium hydroxide solution is added ...

Sodium hydroxide is added to a cylinder of aluminum nitrate, precipitating out aluminum hydroxide. When additional base is added, the precipitate dissolves. The reactions can then be reversed with the ...

The aluminum hydroxide forms a precipitate that sinks to the bottom of the tank, where it is removed. In the third stage, the aluminum hydroxide is heated to 980 o C, which forms aluminum oxide ...

precipitating out aluminum hydroxide. When additional base is added, the precipitate dissolves. The reactions can then be reversed with the addition of hydrochloric acid. The precipitate will reappear ...

Cations can be identified with flame tests or precipitate tests using sodium hydroxide and ammonia solutions. Anions (halide, sulfate, and carbonate ions) can be identified using precipitate tests ...