CHE 106 Lecture Notes - Lecture 9: Onondaga Lake, Tap Water, Sodium Chloride
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In s. a there are salt deposits where water is pushed forward into the desert where they create ponds. Aqueous solutions: solutions: homogenous mixtures of two or more pure substances, solvent: major component; does the dissolving, solute: minor component of solution; what is dissolved in the solvent, ex. Nacl(aq) solute h20 solvent: ex. Sugar (aq) solute h20 solvent: not everything goes into a solution the same way, electrolytes: a compound that goes into a solution dissociates as its respective ions. Dissociation (ionization): : partial negative charge, e(cid:454)cess electron (cid:894)e (cid:895) densit(cid:455, + : partial positive charge less electron (cid:894)e (cid:895) densit(cid:455, ex. Tap water has different ions in it so it"s not pure: motion of ions in a solution are responsible for the conductivity of aqueous solutions. Molecules in solution: nonelectrolyte: no ions; dissolve in water yet do not break into ions as they only have covalent bonds, ex. sucrose solution and pure water dissolve as molecules.
