Also, the calcium hydroxide produced forms a white solid in the solution ... Small pieces of Solid sodium metal are placed in two different concentrations of two different acids (hydrochloric acid and ...

Calcium oxide or calcium hydroxide can be used in this practical. Use a measuring cylinder to add dilute hydrochloric acid to a beaker. Dip a clean glass rod into the contents of the beaker.

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 ...