Why Nonpolar Solvents Dissolve Nonpolar Solutes
* "Like Dissolves Like" Principle: This fundamental rule of chemistry states that substances with similar polarities tend to dissolve each other.
* Polarity: Polarity refers to the distribution of electrical charge within a molecule.
* Polar molecules: Have an uneven distribution of charge, creating a positive and a negative end.
* Nonpolar molecules: Have a balanced distribution of charge.
Substances Soluble in Carbon Tetrachloride (CCl4)
* Other Nonpolar Organic Compounds:
* Hydrocarbons: These contain only carbon and hydrogen (e.g., methane, hexane, benzene, toluene).
* Fats and Oils: These are long chains of nonpolar hydrocarbons.
* Halogenated Hydrocarbons: Compounds with carbon, hydrogen, and halogens (e.g., chloroform, dichloromethane).
* Some Gases: Nonpolar gases like oxygen (O2) and nitrogen (N2) can dissolve to a limited extent in CCl4.
Substances Generally Insoluble in Carbon Tetrachloride (CCl4)
* Polar Compounds:
* Water (H2O): A very polar molecule.
* Alcohols (e.g., ethanol, methanol): Contain polar -OH groups.
* Acids (e.g., acetic acid): Contain polar -COOH groups.
* Salts: Ionic compounds with strong electrostatic interactions.
Important Note: Carbon tetrachloride is a toxic and carcinogenic substance. It is no longer widely used as a solvent due to these health risks.
