CHEM 104 1st Edition Lecture 15 Overview of rate laws integrated rate laws for different order of reactions Order Rate Law Integrated Rate Law Slope 0 Rate k A t kt A 0 k 1 Rate k A Ln A t kt ln A 0 k 2 Rate k A 2 1 A t kt 1 A 0 k Half life t1 2 the time required for the reactant concentration to drop to half of the initial value For 1st order reaction at time t t1 2 A t A 0 2 T1 2 ln2 k 0 693 k 1st order half life doesn t depend on concentration The half life of a half life is half of the first amount continually decreases by with each half life Shelf life the time required for 10 of the reactant to decompose i e 90 remains Example expiration date of pharmaceutical drugs is guarantee date that at least 90 of the drug remains Nanoscale view of reactions For a reaction to happen the molecules of the reactant must satisfy the following conditions o Molecules must have enough energy o Molecules must collide 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 2 types of elementary reactions elementary simple reactions form which more complex reactions can be build o Unimolecular A products 1 molecule of reactant o Bimolecular A B products 2 molecules of reactants but A and B can be the same molecule Molecularity how many molecules are involved Example cis 2butene trans 2butene is a unimolecular reaction
View Full Document
Unlocking...