Chapter%2011_Solutions_part1_post

Chapter%2011_Solutions_part1_post - CHM 11200 Spring 10...

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CHM 11200 Spring 10 Chapter 11 Solutions
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Composition of Solutions Most chemical reactions occur in solution. solvent largest component of solution can be gas, liquid or solid solute(s) smallest component(s) of solution can be gas, liquid or solid 2
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Composition of Solutions 3 NaCl (s) Na + (aq) + Cl (aq) HCl (g) H + (aq) + Cl (aq) H 2 O( l ) H 2 O( l ) NaOH (s) Na + (aq) + OH (aq) H 2 O( l )
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Solubility Rules 4
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More About Solutions When a solid substance dissolves in a solvent we say it is soluble. CH 3 CH 2 OH ( l ) CH 3 CH 2 OH (aq) 5 When one liquid “dissolves” in another liquid we say the two liquids are miscible . H 2 O( l ) H 2 O 2 ( l ) H 2 O 2 (aq) H 2 O( l ) Nonelectrolytes retain their molecular structure when dissolved in water.
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Formation of Solutions Ethanol with water Ethanol: Shake 6
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Formation of Solutions Ethanol with water: potential for disorder increases 2200 E is negative (exothermic dissolution) H 2 O and ethanol form hydrogen bonds both with themselves and with each other 7
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Chapter%2011_Solutions_part1_post - CHM 11200 Spring 10...

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