Part A: Electrochemical CellMass Data for Electochemical Cell CopperZincInitial mass of strip (g)2.709 3.111 Final mass of strip (g)2.0972.909Mass gained or lost (g)0.198 -0.201 Measured Ecell (V)= 1.19Part B: ElectroplatingMass Data for Electoplating (measurements taken every 5 min) Mass (g)Mass GainedInitial0.948 0After first plating1.094 0.146After second plating1.244 0.296After third plating1.402 0.454 a) Using the amount of zinc lost in part A, how much copper should have theoretically been gained?b) What is ther average weight of copper gained per minute in part B of this expirement?c) What is the present by mass of copper on the paper clip at the end of this expirement? How many minutes would it take the paper clip to be 50% copper?

a) Amount of Zn lost = 0.201 g Thus the theoretical amount of Cu gained must be = 0.201 g

Answered: Part A: Electrochemical Cell Mass Data…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter17: Electrochemistry And Its Applications

Section: Chapter Questions

Problem 111QRT

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Part A: Electrochemical Cell

Mass Data for Electochemical Cell

	Copper	Zinc
Initial mass of strip (g)	2.709	3.111
Final mass of strip (g)	2.097	2.909
Mass gained or lost (g)	0.198	-0.201

Measured E_cell (V)= 1.19

Part B: Electroplating

Mass Data for Electoplating (measurements taken every 5 min)

	Mass (g)	Mass Gained
Initial	0.948	0
After first plating	1.094	0.146
After second plating	1.244	0.296
After third plating	1.402	0.454

a) Using the amount of zinc lost in part A, how much copper should have theoretically been gained?

b) What is ther average weight of copper gained per minute in part B of this expirement?

c) What is the present by mass of copper on the paper clip at the end of this expirement? How many minutes would it take the paper clip to be 50% copper?

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