LEC 06 CHAP 13

LEC 06 CHAP 13 - Chapter 13 Why study solutions? In order...

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TOUPADAKIS Slide 1 of 46 Chapter 13 How does antifreeze work at the molecular level? How does salt work in melting ice on the roads? Why does sea water has higher boiling point than spring water? Why does a swimmer’s fingers appear to be wrinkled? If you mix one liter of water with one liter of ethyl alcohol you do not get two liters of solution but less. Why? Why study solutions? In order to answer questions like:
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TOUPADAKIS Slide 2 of 46 Lecture 6 Solutions: Terminology. Common solutions. Ways of expressing concentration. What is ΔH solution ? Ideal versus non-ideal solutions. Molecular versus ionic solutions. Hydration Energy: ΔH hydration
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TOUPADAKIS Slide 3 of 46 Solutions: Definitions Solution A homogeneous mixture, uniform throughout. Solvent The substance present in larger amount in a solution. Solute In the case of a solution of a gas or solid dissolved in a liquid, the gas or solid is the solute; in other cases, the component in smaller amount is the solute. A solution may have several solutes, which are generally present in lesser amounts than what the solvent is.
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TOUPADAKIS Slide 4 of 46 Common Solutions
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TOUPADAKIS Slide 5 of 46 ppm, ppb and ppt Very low solute concentrations are expressed as:
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LEC 06 CHAP 13 - Chapter 13 Why study solutions? In order...

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