Featured in PASCO’s College Chemistry Instructor Guide

College Chemistry Instructor Guide

(PS-3803A)

College Instructor edition with 36 experiments covering introductory and general chemistry topics.

Electroplating

Lab Summary

Use a voltage-current sensor to construct an electrochemical cell that deposits copper onto another metal surface and to apply Faraday’s law to relate the total electric charge to the mass of metal deposited.

Theory

Students construct an electrochemical cell that deposits copper onto another metal surface. They also apply Faraday’s law to relate the total electric charge to the mass of metal deposited.

Method

Students gain experience conducting the following procedures:

  • Determining the change of mass of each electrode due to electroplating.
  • Comparing the experimental changes in mass at each electrode to the expected change in mass due to the total electrical charge, calculated using Faraday’s law.

Sensors / Equipment Used:

PASPORT Voltage-Current Sensor

(PS-2115)

Allows students to safely measure voltage and current simultaneously without overloading the sensor. For use with PASPORT Interfaces.

Materials Used:

DC power supply 
Banana plug cords, red - 2
Banana plug cord, black 
Alligator clip, red
Alligator clip, black 
Ring stand 
Clamps - 2
Beaker, 100-mL 
Magnetic stir plate 
Balance 
Metal object (key or spoon) 
Copper strip or heavy gauge copper wire (3 in)
1.0 M Copper sulfate (CuSO4) - 50 mL
Steel wool 
Electrical tape 
Paper towel - 1 sheet
Magnetic stirring bar

The Associated Bundle:

Advanced Chemistry Standard Sensor Bundle

(PS-2928A)

Contains the probeware for completing experiments in the College Chemistry lab manual.

Interface Required

This experiment may require software and an interface for data collection.