Solubility of salts

Edited by Jamie (ScienceAid Editor), Taylor (ScienceAid Editor), Sim, Sharingknowledge


Soluble and Insoluble Salts

Use the table below to identify which salts are soluble, and which salts are not.

Soluble Insoluble
All Sodium, Potassium and ammonium
Chlorides Except silver and lead, chlorides
All Ethanoates
Sulphate Except calcium, barium, and lead sulphates
All Nitrates
Sodium, potassium and ammonium carbonates

and hydroxides

All other carbonates and hydroxides are insoluble

Preparing Soluble Salts

To prepare soluble salts you must form crystals of them.

  1. 1
    React the reactants
    If it's not already done, to get the soluble salt, you must react the reactants.
    Was this step helpful? Yes | No| I need help
  2. 2
    Then the solution is passed through filter paper into an evaporating dish to remove excess solid material.
    Was this step helpful? Yes | No| I need help
  3. 3
    Now leave the solution. The liquid should evaporate and crystals of the salt will form in the dish.
    Was this step helpful? Yes | No| I need help

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 ...

a precipiate of barium sulphate above a solution of magnesium chloride solution

To get a pure, dry sample of Barium Sulphate it must be:

  1. 1
    Was this step helpful? Yes | No| I need help
  2. 2
    Washed with distilled water,
    Was this step helpful? Yes | No| I need help
  3. 3
    Left to allow the excess water to evaporate.
    Was this step helpful? Yes | No| I need help

Questions and Answers

Please I need to get the solublities of mgcl2,cacl2,alcl3,nacl,li in acid and base?

Please help me out to get those answers because ii have searched the internet. Help out wit the questions please and I would really appreciate

The molar solubility represented by s is the concentration of a dissolved salt in an ionic solution. To find 's', you can use the solubility constant Ksp. For example, for the dissociation of MgCl2

 *MgCl2      →   Mg++  +  2Cl-
                 s        2s
  Ksp = [s][2s]2 

  Ksp= 4s3
  s = 3√(Ksp/4)

Write a method to explain how to obtain a pure dry sample of sodium chloride?

Give a method.. This is a test, therefore, I require a bit of help. To help find the solution and method, you must have a brain.

Was this helpful? Yes | No| I need help

ScienceAid QnA. This section is not written yet. Want to join in? Click EDIT to write this answer.

Referencing this Article

If you need to reference this article in your work, you can copy-paste the following depending on your required format:

APA (American Psychological Association)
Solubility of salts. (2017). In ScienceAid. Retrieved Mar 21, 2018, from

MLA (Modern Language Association) "Solubility of salts." ScienceAid, Accessed 21 Mar 2018.

Chicago / Turabian "Solubility of salts." Accessed Mar 21, 2018.

If you have problems with any of the steps in this article, please ask a question for more help, or post in the comments section below.


ScienceAid welcomes all comments. If you do not want to be anonymous, register or log in. It is free.

Article Info

Categories : Applied

Recent edits by: Sim, Taylor (ScienceAid Editor), Jamie (ScienceAid Editor)

Share this Article:

Thanks to all authors for creating a page that has been read 2,100 times.

Do you have a question not answered in this article?
Click here to ask one of the writers of this article

Thank Our Volunteer Authors.

Would you like to give back to the community by fixing a spelling mistake? Yes | No