503CellPotentials

503CellPotentials - Example 1 A galvanic cell consists of a...

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Lesson 23 1 Lesson 23 Example 1 (a) Write a balanced equation for the cell reaction. (b) A current of 1.45 A is observed to flow for a period of 2.6 hours. How much charge has passed through the circuit during this time? How many moles of electrons is this charge equivalent to? (c) Calculate the change in the mass of the zinc electrode. (d) Calculate the change in the mass of the cadmium electrode. A galvanic cell consists of a cadmium cathode immersed in a CdSO 4 solution and a zinc anode immersed in a ZnSO 4 solution. A salt bridge connects the two half-cells. Lesson 23 Gas electrodes H 2 ( g ) → 2 H + ( aq ) + 2 e Lesson 23 Example 2 A galvanic cell is constructed that has a zinc anode immersed in a Zn(NO 3 ) 2 solution and a platinum cathode immersed in a NaCl solution equilibrated with Cl 2 ( g ) at 1 atm and 25 °C. A salt bridge connects the two cells. (a) Write a balanced equation for the cell reaction. (b) A current of 0.80 A is observed to flow for a period of 25
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This note was uploaded on 11/29/2011 for the course CHE 102 taught by Professor Simon during the Fall '08 term at Waterloo.

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503CellPotentials - Example 1 A galvanic cell consists of a...

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