Electrochemistry_IV_Electrolysis

Electrochemistry_IV_Electrolysis - GALVANIC CELL...

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GALVANIC CELL Anode Reger Cathode + + - - Cathode Anode Cu deposits on electrode Zn deposits on electrode Overvoltage ELECTROLYTIC CELL Required voltage: > 1.10 V
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ELECTROLYSIS Cathode Anode +- charge = current x time q = I t q (in coulombs,C ) I (in amperes, A = C/s) t (in seconds, s) (Faraday’s Constant) 96,485 or mol e C F Cm o l e EXAMPLE: If a current of 0.50 A flows for 1.00 hr, then what mass of Ag is plated onto the spoon? Mol e - Charge Mol Metal Mass Metal Electroplating Zumdahl E6
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ELECTROLYSIS Cathode Anode +- charge = current x time q = I t q (in coulombs,C ) I (in amperes, A = C/s) t (in seconds, s) (Faraday’s Constant) 96,485 or mol e C F Cm o l e EXAMPLE: If a current of 0.50 A flows for 1.00 hr, then what mass of Ag is plated onto the spoon? Mol e - Charge Mol Metal Mass Metal 108 0.5 2. 36 96,5 00 00 0 1 mo mol e x gAg lA xg A g mol Ag g x m Cs x ol C s e = Zumdahl
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ELECTROLYSIS The same quantity of electricity flows through the two solutions because they are placed in series.
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This note was uploaded on 03/25/2011 for the course PHYSICS 121 taught by Professor Fayngold during the Spring '10 term at NJIT.

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Electrochemistry_IV_Electrolysis - GALVANIC CELL...

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