Lecture 17

Lecture 17 - CHM 115 Lecture 17 Todays Lecture Reading was...

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1 CHM 115 Lecture 17 Today’s Lecture Reading was KTT: Review Sections: 4.5, 14.1, 14.2 Inter -molecular Forces (cont’d) Forming Solutions So why do solutions form? Measuring the concentration of solutions Next Lecture Read Section 14.4
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2 Intermolecular Forces Model Basis of Attraction kJ/mol Example
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3 Example Match strongest interparticle force with the compound Compound Intermolecular forces A. CH 3 OH dispersion (London), B. CCl 4 ion-induced dipole, C. Cl 2 dipole-dipole, hydrogen bonds, or ion-dipole
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4 Formation of Solutions Ethanol with water. Ethanol: Shake
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5 Formation of Solutions Ethanol with water: Potential for disorder increases and E is negative (exothermic dissolution, both H 2 O and ethanol form hydrogen bonds
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6
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7 Formation of Solutions Break H-bonds & dispersion forces in H 2 O Break dispersion forces Make equivalent H-bonds & dispersion forces in the solution
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8 Formation of Solutions What will happen if we add dichloromethane to water?
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Formation of Solutions Dichloromethane with water. Shake
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Lecture 17 - CHM 115 Lecture 17 Todays Lecture Reading was...

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