11-6-08[lecture18]jr

11-6-08[lecture18]jr - Chemistry 116 11/6/08 Lecture...

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Chemistry 116 11/6/08 Lecture Notes-JR Arrhenius model: To decide whether an equation is of this type, decide which chemical on the reactant side is an acid and which is a base. The acid always has an H+ The base always has an OH- The reaction always has water as a product Always a salt in the product (cation from base, anion from acid) o They are exchange reactions: “couples switching partners” A good question on an exam might be to decide if a given equation is from the arrenius model, bronsted-lowry, or neither. Bronsted-Lowry: A more general model of acid-base reactions, Arrenius equations are just a more specific form of this category. Bases do not necessarily have a removable OH - . That is, OH - can be the base, but there are lots of other things that could also be Bronsted-Lowry bases. To figure out, just look at base. If there is an OH - , the equation is Arrhenius model (and also B-L model, since Arrhenius is a subset of it).
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11-6-08[lecture18]jr - Chemistry 116 11/6/08 Lecture...

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