MCB 450 1st Edition Lecture 2Outline of Last Lecture I. The Unity of BiochemistryII. Carbon Compounds & StereochemistryIII. Functional GroupsIV. Types of Biological MoleculesV. Central DogmaVI. Domains of LifeCellular Organization Outline of Current Lecture I. Properties of WaterII. Brownian (Thermal) MotionIII. Hydrogen BondsIV. Hydrophilic, Hydrophobic & Amphipathic MoleculesV. Weak, Non-Covalent InteractionsVI. Acid-Base Chemistry: pHVII. Buffers and Titration CurvesCurrent LectureWater-Universal solvent-Chemical reactions that occur that we will talk about occur in waterProperties of Water-The melting point and boiling point of water indicates that there are many intermolecular forces in water-Water has high heat capacityThe water molecule is dipolar-Hydrogen bond - between slight negative on oxygen atom and slight positive on hydrogen atomHydrogen Bonds-LONGER and WEAKER than covalent bonds-Intra - between atomsH-bonding in liquid waterThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.-Only forms crystal lattice (completely ordered) if it is iceBrownian Motion-Brownian motion - atoms jiggle around, determined by temperatureoAt higher temperatures atoms will move fasteroAllows molecules to interact with each otherSolvent Properties of Water-Clathrate - like a cageRelationship between Ka and pH: a key equation-Memorize henderson-hasselbach equation!Definition of pKa-1/2 ionic group titrated - half group protonated, half deprotonatedTitration curve for phosphoric acid, polyprotic acid-Sometimes used for exam
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