Solubility Rules for Ionic Compounds
You will be responsible for being able to use the solubility rules, but you will not be responsible for memorizing the solubility rules. A table of solubility rules is in your workbook as example 7. If you would like a brief explanation of what is contained in the table, read on. If the table is self-explanatory to you try your hand at exercise 8 in your workbook (also shown below) and then check your answers at the bottom of this page.
Explanation of the Solubility Rules Table
The first column lists the "type of compound" and the next two columns list which of those substances are soluble and which are insoluble or slightly soluble.
Practice Using the Solubility Rules
Now you should use these solubility rules to decide whether or not some compounds are soluble. So take some time now to determine whether the following compounds are soluble or insoluble. (These are also listed in exercise 8 in your workbook.) After you have done that, check your answers below.
Note that Fe2S3 is a sulfide rather than a sulfate.
E-mail instructor: Eden Francis
Clackamas Community College