CHEM 031 Lecture Notes - Lecture 20: Gas Constant, Intermolecular Force, Boiling Point
Document Summary
Pairs of liquids that are soluble, mix well. Pairs of liquids that have limited solubility, do not mix well. Attractive forces between the water molecules are stronger than the attractions of the water molecules for the other liquid. As you increase the number of carbon in a carbon chain, the solubility of that compound in h2o goes down. Solubility depends in part on the attractive forces of solute and solvent molecules. Polar substances dissolve in polar solvents and nonpolar molecules dissolve in nonpolar solvents. When mixing solutions, you can tell which liquid is which (like when oil and water) by looking at the density, as the denser liquid will go to the bottom. 1. 00 cp is the viscosity of h20 at 20 c. 1 poise = 1 p = 1 g/cm x s. The stronger the intermolecular forces, the higher the viscosity.