Amperometric titration

We ran MgCl2 through various tests to see if its properties match our UWC. the first test was to compare the solubility of UWC and MgCl2. We added 1mL of distilled water to two different beakers each and gradually added 1g of MgCl2 and 1g of our UWC to each beaker. Approximately after 15 minutes, both solids dissolved in the water and MgCl2 passed this test. The second experiment was the halide test to determine if there are any Cl- ions in both solutions. We added 1 mL of 6M HNO3 and 1mL of…

distilled water were placed into the flask. The solution was stirred until all of the oxalic acid crystals were dissolved. One drop of phenolphthalein indicator was then added to the 250 mL Erlenmeyer flask. The flask was placed under the buret and the titration began. Turning the stopcock drops of the NaOH solution began to drop into the oxalic acid and phenolphthalein indicator solution. Once neutralization was reached the oxalic acid and phenolphthalein indicator solution turned pink and the…

For the following lab, the purpose is to utilize titration to determine the amount of ascorbic acid (vitamin C) present in a substance by reacting it with potassium bromate. An oxidation reaction takes place with ascorbic acid to produce dehydroascorbic acid, using an excess of bromine. The total amount of bromine utilized during the experiment is determined utilizing a back titration, in which the bromine is reacted with bromate. One mole of bromate produces three moles of bromine and the…

amount that was titrated or assumed whole numbers rather than decimal points. We could have also titrated more than necessary considering the color change was not instantaneous. As we performed more titrations we became more diligent with how much we added at a time which could have led to our last titrations being more accurate than our firsts. Another error that was possible was contaminated. We used the same volumetric flask to complete each trial, which meant we had to clean and rinse the…