10-12-10 - Lecture 6 - Chapter4

10-12-10 - Lecture 6 - Chapter4 - Setup for titrating an...

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Setup for titrating an acid with a base Setup for titrating an acid with a base
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Things to remember about titrations 1. Add solution from the buret. 2. Reagent reacts with compound in solution in the flask. 3. Indicator shows when end point has been reached. 1.At the equivalence point the initial analyte has completely reacted with added titrant.
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Oxidation/Reduction = Redox Rxns Redox reactions involve ELECTRON TRANSFER between an electron donor and electron acceptor. Transfer leads to: 1. increase in oxidation number of some element = OXIDATION 2. decrease in oxidation number of some element = REDUCTION
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A HELPFUL SYSTEM FOR DETERMINING OXIDATION NUMBERS RULES: (see supplemental materials on homepage) 1. The oxidation number of a neutral element is zero. 2. Fluorine always has an oxidation number of -1 in compounds. 3. The elements of groups 1A, IIA, and IIIB always have positive oxidation numbers of +1, +2, and +3 respectively in compounds.
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10-12-10 - Lecture 6 - Chapter4 - Setup for titrating an...

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