Exp_11_Electrogravimetry - Abstract: This experiment was...

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Abstract: This experiment was found out mass of the large electrode before electrolysis. Moreover, the mass of large electrode after copper deposition. The concentration was found out for the copper is equal to 1.20*10 3 ppm. Also, the weight of copper was found out . 0599g. The error was calculated 3.37%. Introduction: In electrogravimetric, an electric current is used to deposit the sought metal on platinum electrode. Some cases the metal is deposited on a weighed platinum cathode and its amount determined from the increase in weight. Thus, copper (Cu +2 +2e - ↔Cu; E o =.34 v). Copper is generally deposited from a nitric sulfuric acid medium. Nitrate ion is added to depolarize the electrode and prevent the reduction of hydrogen ions to H 2 gas. Objective: "To quantitatively separate Copper metal by electrodepositing procedure using Platinum electrodes." Apparatus: Electrolysis unit Two platinum gauze electrodes (cathode and anode) Magnetic stirrer Chemicals:
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This note was uploaded on 03/24/2011 for the course CHEM 323 taught by Professor Basimali during the Fall '09 term at King Fahd University of Petroleum & Minerals.

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Exp_11_Electrogravimetry - Abstract: This experiment was...

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