11-28-07%20-%20Lecture%2018%20-%20Fund%20L%2cM

11-28-07%20-%20Lecture%2018%20-%20Fund%20L%2cM - Things to...

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Reactions Involving a Reactions Involving a LIMITING REACTANT LIMITING REACTANT In a given reaction, there is not enough of one In a given reaction, there is not enough of one reagent to use up the other reagent completely. reagent to use up the other reagent completely. The reagent in short supply The reagent in short supply LIMITS LIMITS the quantity of the quantity of product that can be formed. product that can be formed.
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COMBUSTION Hydrocarbons and other organic compounds burned in the presence of excess O 2 (g)
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COMBUSTION REACTIONS Atoms in the compound are produced as the following: H appears as H 2 O C appears as CO 2 N usually appears as NO 2 S usually appears as SO 2 O comes from O 2 in the air. 2 C 4 H 10 (s) + 13 O 2 (g) 8 CO 2 (g) + 10 H 2 O (l)
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Setup for titrating an acid with a base Setup for titrating an acid with a base
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Unformatted text preview: 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 exact stoichiometric reaction has occurred. 4. At the stoichiometric point moles analyte i = moles titrant f Redox Titration The percent of tin in an alloy can be determined by treating the alloy with acid, which converts tin metal to Sn 2+ ions in solution. These are titrated with Ce 4+ ions, producing tin(IV) and Ce(III) ions. A 2.00 g sample of alloy was dissolved with acid and titrated with a solution of cerium (IV) nitrate. It required 38.46 mL of 0.2164 M Ce(NO 3 ) 4 to react completely with 45.00 mL of the solution of dissolved alloy. What is the percent tin in the alloy?...
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This note was uploaded on 10/24/2009 for the course CHEM 234234234 taught by Professor Johnson during the Fall '08 term at UCSD.

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11-28-07%20-%20Lecture%2018%20-%20Fund%20L%2cM - Things to...

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