Determination of water hardness using edta in determination of water hardness using edta, dry 20g of unknown sample weigh accurately duplicate samples of 020 to 025 grams of the dry limestone and transfer to a 250ml erlenmeyer flask to each of the sample, carefully add 5ml of concentrated hcl solution.
Using complexometric method of calculating water hardness, an edta solution was made and calculated to be around 00209m this edta solution was then used to titrate a water sample with unknown hardness.
Water “hardness” was analyzed in this experiment, through the determination of caco3 concentration this was achieved by the titration of an unknown solution using a standardized 01m edta, and addition of eriochrome black t to the unknown, to indicate the endpoint of the titration.
Water and markets economics essay to what extent do markets determine the distribution and use of water in australia water is an essential resource and is, fortunately, the most abundant resource on earth. Complexometric determination of water hardness page 1 of 4 chm152ll lab manual complexometric determination of water hardness the hardness of water water from rainfall picks up impurities by dissolving salts present in the soil these salts contain ions of sodium, magnesium, calcium, iron and other metals.