'Lab 3 Determinates of Water Hardness\r'

'Determination of piss Hardness Using a Titrator Heather Cr every chemistry 1 SMT- 271044 10/17/2012 Abstract From perceive all of my results and conclusion I now take on that I didn’t chthonicstand this lab very well and that its not easy when others try to help. Since I relieve oneself bad water it tells me that my water flows everyplace and through rocks and minerals, like limestone. Purpose The purpose of this lab is to become familiar with the concept of water callus. We postulate that hard water contains high levels of dissolved minerals that argon in the form of metallic ions.Most of Ohio which is the state I live in either has moderately hard water or hard water. For as my townspeople the city is moderate and the country is hard. Procedure 1) move safety things on 2) Place the tool in the closed position on the end of the titrator and match with 10 mL of EDTA answer. 3) Put a collapse up paper pass over under the titrator and award a few drops of the solution to fall into the towel. This personal manner it fills the tip of the titrator then close and throw the towel away. Then place the 100 mL beaker under the setup. 4) Use the graduated cylinder to measure merely 10 mL of tap water from your sink. ) sprout the tap water into the beaker then add 5 drops of pH 10 buffer solution. Swirl cautiously the mixture in the beaker. 6) Read the heap of EDTA in the titrator and record the initial volume. Then slowly blossom the stopcock and add 1 drop at a time while swirling the mixture.7) Once the solution turns a pale blue-gray color turn the stopcock off then record the final volume in the titrator. 8) Repeat steps 4-7 and fill in Table 1. 9) Pour the rest of the contents charge the drain information Data Table 1: EDTA titration volume| | Initial EDTA account book (mL)| Final EDTA Volume (mL)| Total Volume of EDTA Used (mL)| Trial 1| 9 mL| 7. mL| 1. 6 mL| Trial 2| 8 mL| 6. 6 mL| 1. 4 mL| Trial 3| 7mL| 5. 2 mL| 1. 8 mL| bonny V olume of EDTA Used (mL): 1. 6 mL | Data Table 2: Water Hardness| number Volume of EDTA Used (mL)| Concentration Ca^2+ ions per Liter of Water (mol/L)| Water Hardness (ppm CaCO3)| 1. 6 mL| 0. 015 mol/L| 1,500. 9 ppm CaCO3| Results A) found on the analysis of your local water, would you classify its hardness as soft, moderate, hard, or very hard? exempt your answer. My water is moderately hard even though it’s the city we still have bathymetry problems due to our soil and the minerals in our town.The country all has hard water so the deal with consume and bigger clogs than the city. B) Approximately how much calcium would you view by drinking eight 8-oz glasses of your local water? HINT: 1 oz(fluid ounces) =29. 57 mL 8oz= 236. 56 236. 56*8= 1,892. 48 mL Conclusion In conclusion it seems as though my results have come to show that I have very hard water when looking at the last graph but to have it tell 1,500 tells me that my results is potentially incorrect. From what I understand it shows that the calcium carbonate is very high in my town.\r\n'