The Relationship between Conductivity and Temperature

Overview

Objectives/Goals My Objective of this study is to see the relationship between conductivity and temperature. Methods/Materials I used an AC power source which stands for alternative current, 2 multimeters, a thermometer, an electrical stirrer/hot plate, Volumetric flasks and beakers. I boiled the half molar solutions; CuSO## and Zn(NO#y)#ü. As the temperature goes up, I measured the Ampere (#E). I used copper for the CuSO## solution and graphite for Zn (NO#y)#ü solution as electrodes. Results I did 6 trials for both solutions and I found out as the temperature increases, the resistivity decreases and the electrical current increases. Also, I found out that the solution of Zn (NO#y)#ü carries more electrical current than the solution of CuSO##. Conclusions/Discussion In my first experiment with the CuSO## solution, I had a little problem. For example, there is missing data for the first three experiments. I fixed it and tried a new solution out of Zn (NO#y)#ü and using a new electrode called graphite (type of carbon). Also, I cleaned the rings that are oxidized and the electrolytes. Keeping the distance of the two electrodes helps improve my experiment. These modification helped me get better data. As the temperature goes up, the conductivity increases, too. That is because as the temperature goes up, the ions¡# energy increases and become more active so the electrical current goes up as well.

Competition history

• CSEF 2017 Chemistry · Entry J0604

Resources

• CSEF project summary ↗

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