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Solubility Rules

Solubility Rules - Solubility Rules = The solubility rules...

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Solubility Rules =================================================================================================== The solubility rules given below are for ionic compounds or salts . Therefore, these rules do not apply to molecular compounds such as acis, e.g. HCl, H 2 S, H 2 SO 4 , HC 2 H 3 O 2 , etc. or organic compounds, e.g. C 2 H 5 OH. A soluble ionic compound dissolves to a significant extent in water and is generally defined as having a solubility in water of > 0.1 M. An insoluble ionic compound does not dissolve to a significant extent in water and is generally defined as having a solubility in water of < 0.1 M. Please not that the 0.1 M dividing line, between soluble and insoluble, is a man-made rule, i.e., not a fundamental law of nature. Therefore ionic compounds with intermediate solubilities, i.e., near the 0.1 M limit, may be classified as soluble in one source but insoluble in another source. In other words this presentation, ionic compounds with intermediate solubilities will be specified as sparingly soluble. Use the solubility rules in the order given. Once a rule is found that applies to either the anion or
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