Re: Chem 2 Poster Project

[D. Samaroo]

Nadya will attempt the Discussion part

Based on the tables shown in the results, there seems to be a direct positive correlation between hardness and conductivity. The average hardness of the pre, post and reference samples were found to be 200 (ppm), 400 (ppm) and zero (ppm) respectively. Their conductivity was averaged to be 2011(µS), 9067.5(µS) and 92 (µS), respectively. This indicates that hardness measures the amount of ……..present in water and a higher conductivity indicates that there is a greater concentration of ….. Present in the samples.
These results can be understood based on the theories of electrical conductivity. The electrical conductivity of water measures the total amount of dissolved solids present in water. These solids mainly include calcium and magnesium, which are almost completely dissolved in the presence of water. When dissolved in water, these elements dissociate into positive and negative ions, making them excellent conductors of electricity. These minerals seep into the water from dirt, rocks, irrigation systems etc.