Lecture%204%20%20part%20I%20Chem%20102

Lecture%204%20%20part%20I%20Chem%20102 - Chapter 4 Solution...

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Chapter 4 Solution Stoichiometry Part I
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Solutions • Solution is homogeneous mixture of two or more substances. • Solute - substance being dissolved • Solvent – liquid medium • Solubility- ability of one compound to dissolve in another compound ( soluble, slightly soluble and non soluble)
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Water as solvent Can dissolve many different substances. A polar molecule because of its unequal charge distribution. Aqueous solutions
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Water Molecules and ionic compounds Salt ( + and - Ions) interacts with water = hydration process Ions become hydrated Move independently Solubility depends of attraction of ions and H 2 0 molecules NaCl very soluble AgCl slightly soluble
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Nonionic compounds and Water Ethanol C 2 H 5 OH Polar – polar Nonpolar- nonpolar “ like dissolves like”
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Electrolytes Electrolyte – substance that when dissolved in water produces a solution that can conduct electricity. Strong Electrolytes – conduct current very efficiently Weak Electrolytes – conduct only a small current Nonelectrolytes – no current flows
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Soluble salts NaCl (s) Na
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This note was uploaded on 09/20/2010 for the course CHEM 102 taught by Professor Peterpastos during the Summer '08 term at CUNY Hunter.

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Lecture%204%20%20part%20I%20Chem%20102 - Chapter 4 Solution...

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