volumetric flask using a volumetric pipette. The volumetric flask was then filled to the mark with distilled water. The flask was covered with Parafilm and inverted to mix. The next part of the experiment was to determine the Vitamin C in a solution of known concentration. Observations of the Vitamin C sample and the amount found on the label was recorded. A tared piece of weighing paper was used to weigh 0.27 g of Vitamin C. The Vitamin C was then transferred to a clean 50 mL volumetric flask. The flask
Premium Water Chemistry Titration
cork. 5. The stop cork was closed‚ shaked and again vented. The mixture was held stand to allow the layers to separate. 6. The top layer was the ether layer and the bottom layer was the aqueous layer. 7. The aqueous layer was drained into an erlenmeyer flask
Premium Solvent Chemistry Laboratory glassware
(antacid tablets) Standardization of NaOH Materials: -Buret -250 mL Erlenmeyer flask -0.1 M NaOH -0.8 g KHP -Water -Three 150 mL beakers -magnetic stirrer A buret was rinsed with water and then with a small amount of the NaOH solution. Then the buret was filled with NaOH. The initial volume was read and recorded and the buret was labeled as BASE. Then approximately 0.8 g of KHP was placed in the flask. 100 mL of water was added and was swirled until dissolved. Three drops of
Premium
reagent can easily react with water‚ all glassware including the 25 ml round bottom flask‚ magnetic stir bar‚ 3 and 5 ml conical vial‚ 50 mL Erlenmeyer flask‚ claisen adapter‚ drying tube and 5 glass pasteur pipets were first added to a 250mL beaker and placed in the oven for 30 minutes. After the completion of the thirty minutes‚ 0.150 g of shiny magnesium turnings and a stir bar was first added to the round bottom flask and the claisen adapter along with the drying tube packed with calcium chloride
Premium Chemistry Water Solvent
mL * Manganese sulfate solution‚ MnSO4∙ H2O‚ 1.0 M‚ 50 mL * Oxalic acid solution‚ H2C2O4‚ 0.25 M‚ 60 mL * Potassium permanganate solution‚ KMnO4‚ approx. 0.02 M‚ 100 mL * Sulfuric acid solution‚ H2SO4‚ 6 M‚ 50 mL Materials: * Buret‚ 50-mL * Erlenmeyer flasks‚ 250-mL‚ 3 * Hot plate * Thermometer * Volumetric pipet‚ 10-mL * Volumetric pipet‚ 25-mL *
Premium Titration Potassium permanganate
Fermentation of a Carbohydrate: Ethanol from Sucrose Abstract The purpose of this lab was to demonstrate the fermentation process of ethanol from the substrate sucrose. To make ethanol from sucrose two enzymes invertase and zymase were used. Vacuum filtration and fractional distillation were performed to get a more concentrated solution. The density of ethanol was .825 g/mL with a percent composition of 85% pure
Premium Carbon dioxide Ethanol Metabolism
the rate of the oxidation/reduction reaction because it occurs much faster but is still dependent upon the other reaction. To accomplish this‚ two mixtures were prepared in separate Erlenmeyer flasks. In the 250 ml flask .010M potassium iodide‚ .0010M Sodium thiosulfate and distilled water was prepared. A 125 ml flask was also prepared with a mixture of .040M potassium bromate‚ hydro chloric acid and
Premium Chemistry Chemical reaction Oxygen
50 mL of concentrated nitric acid was measured in a graduated cylinder‚ 20 mL of which was transferred to the 80mL test tube. This test tube was placed in the Erlenmeyer flask with enough water covering at least 2 cm of the test tube. The coiled copper wire from earlier was cautiously placed into the test tube. The fume hood was lowered to prevent any inhalation of the toxic gas emitted from the exothermic reaction
Premium Chemistry Chemical reaction Copper
level of the iodine solution remaining in the buret‚ after titration. The difference between the initial level and the final level is the amount of iodine titration solution needed to create a reaction with the vitamin C. Rinse out and dry the Erlenmeyer flask. Repeat step 17-26 three times with the Vitamin C standard solution. You should get results that are within about 0.5 mL of each other. If you do not‚ repeat this step until you have three results that are within about 0.5 mL of each other. Be
Premium Iodine Titration Starch
recovery of the sample. This technique of purification is only effective when there is a smaller amount of impurity in one substantial component. EXPERIMENTAL SECTION Material Impure adipic acid charcoal water Erlenmeyer flask filter paper Heat plate Filter flask 50ml & 250ml Beakers O ring & stand Graduated cylinder Pipette Ice Scoop Stemless funnel Vacuum filter (assembled) Spatula Boiling chips Scale Weighing paper Holding strap Hirsch
Premium Water Temperature Solid