Testing And Analyzing The Quality Of Water

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Introduction Testing and analyzing the quality of water can be used to determine if the water is safe or not to ingest. Some tests performed on water will help determine if the water is bacteriologically free, contains chemical contaminant such as nitrates, the acidity of the water itself, or to see the amount of chloride in water. Hydrology is the study of water. It has evolved as a science due to the need of understanding the complex water system and to help solve water problems (USGS). In this lab, a series of titration were conducted in order to see the amount of calcium present in different samples of water in the state of Florida. Measuring the amount of calcium in water determines how hard the water is. Hard…show more content…
In order to dissolve the solution completely, the solution itself had to have a pH of 8. To achieve this, 8 drops of ammonium buffer was added, making the remains of the EDTA dissolve completely. Titrating Water Sample #1- to test the hardness of water, the first sample used wasDasani water. 25ml of the Dasani water was poured out into the beaker. 10 drops of Eriochrome Black T indicator was placed into the water sample to make the sample turn a shade of pink. The magnetic stirrer was then placed into the flask as the flask was then placed under the burette. Titrate the solution until the solution turns a light blue. Record the change in volume of the EDTA solution. To ensure the accuracy of this process, two more trials were conducted. Titrating Water Sample #2, #3 and #4- in order to see the difference of water hardness from different manufacturers, Zephyrhills and filtered water samples were used to conduct the experiment. 10 drops of the EBT indicator was added into each of the 25ml sample and then placed under the burette to titrate. After the water sample turns a light shade of blue, record the change in volume. Repeat the process two more times for each sample to ensure accurate measurements. Titrating Tap Water and Deionized Water- 25ml of each sample was used for titration to see how big of a difference the amount of calcium was in each sample. One drop of indicator was added to each of the sample
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