A solubility chart is a chart describing whether the
ionic compounds
In chemistry, a salt or ionic compound is a chemical compound consisting of an assembly of positively charged ions ( cations) and negatively charged ions (anions), which results in a compound with no net electric charge (electrically neutral). ...
formed from different combinations of
cations and anions dissolve in or
precipitate
In an aqueous solution, precipitation is the "sedimentation of a solid material (a precipitate) from a liquid solution". The solid formed is called the precipitate. In case of an inorganic chemical reaction leading to precipitation, the chemic ...
from solution.
Chart
The following chart shows the
solubility
In chemistry, solubility is the ability of a chemical substance, substance, the solute, to form a solution (chemistry), solution with another substance, the solvent. Insolubility is the opposite property, the inability of the solute to form su ...
of various ionic compounds in water at 1 atm pressure and room temperature (approx. ). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like
calcium sulfate
Calcium sulfate (or calcium sulphate) is an inorganic salt with the chemical formula . It occurs in several hydrated forms; the anhydrous state (known as anhydrite) is a white crystalline solid often found in evaporite deposits. Its dihydrate ...
may require heat to precipitate. For compounds with multiple hydrates, the solubility of the most soluble hydrate is shown.
Some compounds, such as
nickel oxalate, will not precipitate immediately even though they are insoluble, requiring a few minutes to precipitate out.
See also
*
Solubility rules
Notes
References
{{Chemical solutions
Solutions