The Effect of Temperature, Molarity, and Voltage on the Change in Resistivity and Mass of a Piece of Iron Being Electroplated with Copper

The goal of this experiment was to correctly identify which of three factors—molarity, temperature of solution, and voltage—affects the outcome of the electroplating process most. The molarities used were 0.5M, 1.0M, and 2.0M. The solution temperatures were 5oC, 22oC, and 50oC. The voltages of the batteries were 1.5 volts, 6 volts, and 9 volts. In order to perform this experiment the researchers massed the iron strip and measured its resistivity before electroplating, ran the trial for six minutes using the necessary values for each of the three factors, and measured the mass and resistivity again after the electroplating. A three-factor design of experiment (DOE) showed that there was no significant difference in how each of the factors affected the outcome of the resistivity after electrical depostion. Descriptive analysis showed that the mass was indeed affected by the varying factors, with voltage having the greatest effect on how the mass changed.

Research Done By:

Richard Douglas
Cousino High School

Brandon Moss
Clintondale High School