Aqueous Chemistry Why should we study aqueous Chemistry? Water is fundamental requirement for life...
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Transcript of Aqueous Chemistry Why should we study aqueous Chemistry? Water is fundamental requirement for life...
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Aqueous Chemistry
Why should we study aqueous Chemistry?
• Water is fundamental requirement for life• Most biomolecules are surrounded by water• Water plays role in assembling biomolecules• Water participates in biochemical processes
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The human body is about 60% by weight water
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Electronic structure of the water molecule
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The water molecule is polar
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A hydrogen bond
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Structure of ice
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Water molecules spontaneously form small hydrogen-bonded clusters
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A water strider supported by the surface tension of water
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Relative strengths of bonds in biological molecules
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van der Waals radii
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Hydrated solutes
Water dissolved many compounds. Dissolved particle is called SOLUTE. Solute ion surrounded by water is called SOLVATED or HYDRATED
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Glucose
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A solution of molecules inside a cell
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Dodecane
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Hydration of a nonpolar molecule
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Aggregation of nonpolar molecules in water
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Fatty acid palmitate
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A micelle formed by amphiphilic molecules
The hydrophobic tails of the molecules aggregate,out of contact with water due to hydrophobic effect. The polar head groups are exposed and can interact with the solvent due to hydrophilic effect
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A lipid bilayer
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Lipid vesicle
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A bilayer prevents the diffusion of polar substances
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Ionic composition of intracellular and extracellular fluid
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Sweat and exercise
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Acid-base balance in humans