Solubility Rules

Solubility refers to :

• An ionic compound dissolved in water

• the least amount of solute that can dissolve in a known quantity of solvent at a specific temperature

• the greatest amount of solute that can dissolve in a known quantity of solvent at a given temperature.

• A covalent compound dissolved in water

The term 'aqueous' refers to the substance being able to dissolve in:

• A solution

• Water

• Metal

• An Ionic compound

True or False: All nitrates are insoluble

• True

• False

A precipitate is:

• soluble

• insoluble

Answer explanation

It's mainly insoluble (except gases) and could come in the form of residue or gas (effervescence)

Choose the elements/compounds that are ALWAYS soluble.

• Sodium

• Lead

• Potassium

• Ammonium

• SIlver

Answer explanation

Fun fact: Lead and silver are almost always INSOLUBLE

All Chlorides, Bromides and Iodied (BIC) are soluble EXCEPT:

• Lead

• Sodium

• Silver

• Potassium

True or False: Most Hydroxides and Oxides are insoluble except for SAP(Sodium, Ammonium and Potassium) , with calcium and barium being SLIGHTLY soluble

• True

• False

All Carbonates and phosphates are insoluble in water : True or False

• True

• False

Answer explanation

Remember: SAP is ALWAYS SOLUBLE (sodium, ammonium and potassium)

Tags

NGSS.HS-ESS2-5

True or False: All ionic compounds are aqueous.

• True

• False

All sulfates except which of the following are soluble: (more than one option)

• SAP (sodium, ammonium and potassium)

• Lead

• Barium

• Calcium

• Silver

Answer explanation

Silver Sulphate is SLIGHTLY soluble