CHEM 102 2nd Chapter Lecture 6 Outline of Last Lecture I. Chemical Equationsa. Definitionb. Balancing Chemical EquationsII. Neutralization Reactionsa. Definition b. Reactants and Productsc. Strong acids and basesIII. Oxidation Reductiona. DefinitionIV. Precipitation ReactionsA. Definition ( just know what they are for the exam)Outline of Current Lecture I. Watched Lab Safety Video (You need to speak to the professor if you missed it)II. Kineticsa. Defintionb. SymbolsIII. Collision Theorya. Definitionb. Three things that must happenIV. Catalysis a. DefinitionThese 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.V. Oxidation Reduction (More in depth)Current LectureKineticsKinetics – the study of rates of chemical reactions; how fast a reaction happensRate – the change of concentration per unit time- To calculate rate, divide delta C (Concentration) by delta t (time).∆ C∆ t= rateCollision TheoryCollision Theory – the reaction rate is proportional to the collision frequency, Z, the number of molecular collisions per second. *Z depends on the temperature and concentration of the colliding molecules**Not all molecular collisions result in the formation of products*Three things must happen for a reaction when molecules collide1. The compounds/molecules must touch2. They must have proper orientationa. I.e. they must fit together3. They must collide with enough energy to create a reactionActivation Energy (Ea) – the minimum collision energy required for reaction to occurActivation Complex – the highest energy arrangement of atoms that occurs in the course of the reaction; the reaction will happen!!!CatalysisCatalysis – a substance which increases the reaction rate but is not consumed in the reaction; added to boost the activation energy; provides an alternate reaction path with a lore activation energy*More on Catalysis in next set of notes*Oxidation – ReductionA molecule is oxidized if…1. O is added to the molecule2. The molecule losses H3. The molecule losses electron ( this will happen every time a molecule is oxidized)A molecule is reduced if…1. It losses an O molecule2. It gains a H molecule3. It gains electrons (must gain electrons to be a reduction)Ex. What was Oxidized and what was a reduction?CH4 + 2O2 CO2 + H2OOxygen was a Reduction because it lost an OxygenCarbon was a Oxidized because it gained an
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