What Factors Determine If a Compound Is Not Soluble?
Discover why some compounds are not soluble due to intermolecular forces, polarity, temperature, and pressure effects.
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A compound's solubility is determined by the intermolecular forces between the solute and solvent. A compound might not be soluble if there is a lack of attraction or if the attraction is weaker than the solute's cohesive forces or the solvent's cohesive forces. Polarity plays a critical role; non-polar solutes typically do not dissolve in polar solvents and vice versa. Solubility is also influenced by temperature and pressure, with variations potentially hindering a compound's ability to dissolve.
FAQs & Answers
- What causes a compound to be insoluble in a solvent? A compound may be insoluble if the intermolecular attraction between the solute and solvent is weaker than the solute's or solvent's cohesive forces, or if their polarities do not match.
- How does polarity affect solubility? Polar solutes typically dissolve in polar solvents, while non-polar solutes dissolve better in non-polar solvents; mismatched polarity usually results in low solubility.
- Can temperature and pressure change solubility? Yes, variations in temperature and pressure can affect the solubility of compounds, either enhancing or reducing their ability to dissolve.