Answer
They are useful because they allow us to predict if a compound is soluble or insoluble.
Work Step by Step
Solubility rules are a set of empirical rules that chemists have inferred from observations on many ionic compounds.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.