Calcium Hardness Titration with Calculations to get ppm as CaCO3

One way to measure the hardness due to calcium in water is using a titration method with EDTA and eriochrome blue black indicator. Others have described similar titration approaches, with one nice video being: https://youtu.be/Wj4-nQmW28s. Here the goal is to explain why a quick and dirty multiplier of 20 is used to get us to units of mg/L (or ppm) as CaCO3, which are commonly used in water analyses and drinking water treatment.

The PDF document used to create the video is available at https://cecas.clemson.edu/ladnergroup/share/Calcium%20Hardness%20Titration%20and%20Calculations.pdf.

Видео Calcium Hardness Titration with Calculations to get ppm as CaCO3 канала David Ladner