Solubility of salts
Edited by Jamie (ScienceAid Editor), Taylor (ScienceAid Editor)
Soluble and Insoluble Salts
Use the table below to identify which salts are soluble, and which salts are not.
|All Sodium, Potassium and ammonium|
|Chlorides||Except silver and lead, chlorides|
|Sulphate||Except calcium, barium and lead sulphates|
| Sodium, potassium and ammonium carbonates
|All other carbonates and hydroxides are insoluble|
Preparing Soluble Salts
To prepare soluble salts you must form crystals of them.
- 1React the reactants.If it's not already done, to get the soluble salt, you must react the reactants.Advertisement
- 2Filter.Then the solution is passed through filter paper into an evaporating dish to remove excess solid material.
- 3Wait.Now leave the solution. The liquid should evaporate and crystals of the salt will form in the dish.
Preparing Insoluble Salts
A precipitate is the name given to a solid salt that forms when an insoluble salt is produced from a reaction. For example, with barium chloride and magnesium sulphate...
Barium Chloride + Magnesium Sulphate ==>> Barium Sulphate + Magnesium Chloride BaCl2 + MgSO4 ==>> BaSO4 + MgCl2.
You will see a white precipitate of barium sulphate ...
To get a pure, dry sample of Barium Sulphate it must be:
- 2Washed with distilled water,
- 3Left to allow the excess water to evaporate.Advertisement
- If you have problems with any of these steps, ask a question for more help, or post in the comments section below.
Categories : Applied
Recent edits by: Jamie (ScienceAid Editor)