Tag : water hardness

Determination of Water Hardness

Determination of Water Hardness By: Diane Krehbiel Abstract: In this experiment, the hardness of an unknown water sample will be determined. The calcium in the water will be measured by performing a titration with EDTA. Eriochrome Black T will be used as an indicator. Standardization of EDTA will be performed first and then the determination of calcium concentration. After standardizing the EDTA, the average molarity was found to be 0.01114 M. The calcium concentration was found to be 203.8 ppm […]