diluted with varying amounts of distilled water. Each different concentration will then be transferred into a buret in order to find the volume of 50 drops of each solution. This will be done in three trials in order to provide enough data to support a strong analysis and conclusion. By measuring 50 drops‚ the ability to analyze the volume of a drop will be significantly read using the buret to show the differences between
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(1) Weigh three clean dry labeled 125 mL erlenmyer flasks on an analytical balance. Place about 0.135 grams of oxalic acid dihydrate‚ H2C204.2H20‚ into each of the three separate flasks and reweigh the flasks containing the acid. (2) Set up a buret with KMnO4 solution to be standardized by titration. (3) Dissolve each acid sample in about 25 mL of distilled water. Again don’t mix up the samples. Take one flask and add 1-2 mL of concentrated sulfuric acid. · CAUTION! Concentrated
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Quantitative Determination of Total Hardness In Drinking Water By Complexometric EDTA Titration R. A. J. Cadiz1 and J. M. Nael2 1Institute of Biology‚ College of Science 2National Institute of Geological Sciences‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Date Submitted: May 9‚ 2013 Abstract This experiment is about the determination of water hardness through the use of complexometric EDTA titration. Determination of water hardness is important to
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Conclusion: It was apparent that the goal of the lab was to determine the molarity of NaOH through separate trials using bromothymol blue as the indicator. It was expected for the results to conclude that the molarity of NaOH is 0.50M. For trial 1‚ 0.50M of NaOH was calculated‚ in trial 2 it was a 0.28M of NaOH and trial 3’s results concluded with 0.54M of NaOH. The results of trial 1 and 3 resemble the most similar and consistent to the expected results of the experiment. Discussion of Theory:
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5-1 mL of bromocresol to the flask. 4. Fill up the buret with HCl 5. Let the buret drip into the flask until the color turns green then stop buret. 6. Once it is a green color place it on a burner to boil it‚ add stir bar so it keeps the solution moving. 7. Leave it on the burner until it turns blue again‚ once blue take off burner and let cool down. 8. Place flask under the buret and let HCl into the flask until the color turns yellow. 9. Read buret to get mL of HCl (.0029 L) 10. Get another Erlenmeyer
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performing a titration to determine the concentration of citric acid in a soft drink. Prior to the titration‚ the majority of the carbonic acid was removed by allowing the soft drink to go flat so we do not have to take it into consideration. A buret is used in a titration to dispense measured increments of one solution into a known volume of another solution. Careful technique will allow you to detect the point where the reaction is complete; in this case‚ when all of the citric acid has been
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was added to the 250 mL beaker. The 40-mL of NaOH was then added to the buret which was then attached to the ring stand. The LabQuest and the Vernier pH sensor was then hooked up and turned on to measure and graph the pH of the solution and the volume of NaOH. The Vernier pH sensor was then was placed in the solution and remained in the solution throughout the duration of the experiment. Then‚ the rate of the drip from the buret was then turned on to have a drip rate of
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Name: ******** Class: DME2 Title: Flow Measurement Date: 11/02/2013 Lecturer: Mr Higgins Summary: In this experiment many different meters were used to measure fluid flow rate; the orifice plate‚ the venture meter‚ the rota meter and the weigh tank. Each meter works by its ability to alter a certain physical property of the flowing fluid and then allows this alteration to be measured. The measured alterations are linked directly to the flow rate and these measurements are subbed in
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Procedure: Part I: Titration with an Indicator 1. Fill the 50-milliliter buret with a 0.25 molar NaOH solution. 2. Record volume. 3. Measure out between 20 milliliters and 40 milliliters of the unknown HCl solution. 4. Record volume. 5. The amount of unknown HCl is then added to the 100-milliliter Erlenmeyer flask. 6. Add two drops of the indicator‚ phenolphthalein‚ to the acid in the flask. 7. Using the slider on the right hand side‚ add NaOH to the HCl in the Erlenmeyer
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1. Clean‚ rinse‚ and fill a buret with NaOH solution just as you did in last week’s experiment. Record the molarity of the NaOH and the initial NaOH volume reading from the buret (+0.02 mL). 2. Weigh an antacid table in a weighing boat and record the mass (+0.01 g). Transfer the tablet to a clean mortar and crush the tablet into a fine powder using the pestle. 3. Weigh about 0.2 grams (+0.01 g) of the ground up tablet powder and transfer it to a clean 250 mL Erlenmeyer flask. 4. Transfer
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