CHEM 130 Chapter Notes - Chapter 6.1-6.3: Electrical Resistivity And Conductivity, Molecular Geometry, Standard Solution
Document Summary
Hydration - positive ends of water molecules = attracted to neg charged anions and neg ends of h2o = attracted to + cations cause salt to fall apart /dissolve. These forces are replaced by strong water-ion interactions. (aq) = ions are hydrated by unspecified # of water molecules. Solubility depends on relative attractions of ions for e. o. When ionic substances (salts) dissolve in water break up into individual. Water dissolves many nonionic substances but many substances don"t for h2o molecules cations and anions dissolve in water substances. Polar and ionic substances are more soluble in water than nonpolar. 6. 2 - nature of aqueous solutions: strong and weak electrolytes. Solution - homogeneous mixture same throughout. Electrical conductivity - ability to conduct electrical current. Svant arrhenius - conductivity of solutions arose from presence of ions. Extent to which solution can conduct electric current depends directly on # Strong electrolytes - substances that are completely ionized when dissolved in of ions present water.
