Determination of hardness
Understand the Problem
The question is asking about the methods or processes used to measure the hardness of materials. Hardness can refer to various characteristics, often related to a material's resistance to deformation or scratching.
Answer
Water hardness is determined using EDTA titration.
The hardness of water is typically measured using the EDTA titration method, where ethylenediaminetetraacetic acid (EDTA) is used to titrate the water sample containing calcium and magnesium ions, which are the primary contributors to water hardness.
Answer for screen readers
The hardness of water is typically measured using the EDTA titration method, where ethylenediaminetetraacetic acid (EDTA) is used to titrate the water sample containing calcium and magnesium ions, which are the primary contributors to water hardness.
More Information
Hardness of water is an important quality parameter that affects domestic and industrial use. It's commonly measured in parts per million (ppm), where concentrations above 120 ppm are typically considered hard.
Tips
Avoid confusing temporary hardness, which can be removed by boiling, with total hardness which is measured through titration.
Sources
- Determination of Hardness of Water by EDTA Titrimetric Method - biocyclopedia.com
- [PDF] Aim: Determine the total hardness of given water samples. Introduction - mlsu.ac.in
- Determination of Hardness of Water - staff.buffalostate.edu
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