lab 2 Questions - top. In the reaction benzoic acid...

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Experiment Two:Solubility and Acid-Base Reactions 1. Structures: a. Polar Protic: water and ethanol b. Polar Aprotic: ethyl acetate and acetone 2. Induced Dipole Forces: Hexane and diethyl ether 3. Dipentylamine/benzoic acid solution: a. A
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Experiment Two:Solubility and Acid-Base Reactions b. After adding 1.57 grams of dipentylamine the solution became saturated. At this point, the intermolecular forces of the products can no longer keep together all of the different molecules. This results in a separation of the two layers. This is possible because the products are not completely miscible. 4. Liquid-liquid reactions: a. Immiscible solution: i. Water-diethyl ether, diethyl ether as top layer ii. Water-dichloromethane, Water as top layer iii. Water-ethyl acetate, Ethyl acetate as top layer b. In part V, we did a liquid-liquid extraction in the benzoic acid and diethyl ether solution. In this solution the diethyl ether layer was on
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Unformatted text preview: top. In the reaction benzoic acid completely dissolved and was the limiting reagents. Afterwards, only diethyl ether was left in the solution and it separated from the water. 5. a. The reaction is: NaHCO3 + C6H5COOH --> C6H5COO-Na+ + H2O + CO2 As you can see, the products of this reaction are water, carbon dioxide, and sodium benzonate. The ratio of moles of benzoic acid to sodium bicarbonate is 1:1. Therefore, it should take 84 mg of sodium bicarbonate to react completely with 122 mg of benzoic acid. b. The definition of a saturated solution is a solution in which the maximum amount of solvent has been dissolved. Therefore, the saturated solution of sodium bicarbonate means that any additional solvent added should just sit as a crystal in the solution. The statement is incorrect because it claims that benzoic acid continued to dissolve in an already saturated solution....
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This note was uploaded on 09/18/2011 for the course CHEM 3AL taught by Professor Li during the Spring '08 term at University of California, Berkeley.

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lab 2 Questions - top. In the reaction benzoic acid...

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