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Unformatted text preview: Lec-9: Solutions; concentration & dilution Roy A. Lacey, Stony Brook University; Che 131, Spring 2012 1 Solutions th’ f 75% d b ` Earth’s surface ~ 75% covered by water; depressions in Earth’s crust filled with 1.5 × 10 21 L of H 2 O( l ). ` Properties of water responsible for life on Earth, and many geographical features. ll natural waters (fresh or ` All natural waters (fresh or saltwater) have ionic and molecular compounds dissolved in them. Roy A. Lacey, Stony Brook University; Che 131, Spring 2012 2 Solutions Solutions are Important Solutions are Important Most of the Chemistry which makes life possible Most of the Chemistry which makes life possible occur in aqueous solution occur in aqueous solution Medicine Agriculture Etc. Solution: Solute + Solvent Solute: Salts, Molecular Compounds Solvents: Water, Organic, etc hange concentration by using different hange concentration by using different Change concentration by using different Change concentration by using different amounts of solute and solvent amounts of solute and solvent Roy A. Lacey, Stony Brook University; Che 131, Spring 2012 3 Solutions ` Solutions: • Homogeneous mixtures f two or more of two or more substances: » solvent = substance resent in the greatest present in the greatest quantity » solutes = substances issolved in the solvent ( dissolved in the solvent (...
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This note was uploaded on 03/29/2012 for the course CHE 131 taught by Professor Kerber during the Spring '08 term at SUNY Stony Brook.
- Spring '08