White Precipitate Formation with Sodium Hydroxide: Common Reactions & Metal Ions

When sodium hydroxide (NaOH) is added to a solution, a white precipitate may form if the solution contains certain metal ions. Some common examples include:

1. Calcium chloride (CaCl2) solution: When sodium hydroxide is added to a calcium chloride solution, a white precipitate of calcium hydroxide (Ca(OH)2) forms.

2. Lead nitrate (Pb(NO3)2) solution: Sodium hydroxide reacts with lead nitrate to produce a white precipitate of lead hydroxide (Pb(OH)2).

3. Zinc sulfate (ZnSO4) solution: The addition of sodium hydroxide to a zinc sulfate solution results in the formation of a white precipitate of zinc hydroxide (Zn(OH)2).

These are just a few examples, and the formation of a white precipitate depends on the specific metal ions present in the solution.