CHEM 1221 1st EditionLecture 14Outline of Last LectureI. Freezing-Point-DepressionII. Osmosis and Dialysisa. Osmosis Pressurei. Hypotonicii. HypertonicOutline of Current Lecture I. Chemical Kineticsa. Rate of reactionsII. Rate law equationCurrent LectureChemical Kinetics: speeds of chemical reactions take place.- What affects the Rate of reactions:1. Chemical nature of the reactants2. Ability of the reactants to collide3. Surface area of the solid reactant4. Concentration of the reactant5. Temperature6. Catalyst: a substance that can speed up a reaction.- How to measure rate:ochange∈moles productchange ∈time=∆ moles product∆ t- Change in moles product:o Mol product (final time) – mol product (initial time)o When products are formed the product is positiveo When reactants are consumed, change in the reactant is negative- Average rate of a chemical reaction:These 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.oAverage Rate=change∈molchangeto The rate of a reaction can be obtained by monitoring the change in the amount of reactants or products with time.Rate law equation: relates the rate of a reaction to the concentration of reactants.-k[A]x[B]yo K is the rate constant. It is unique for a particular temperature, independent of reaction
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