I added varying levels of substrate to the test tubes in each experiment. The amount of substrates were .5 grams, 1 gram, 2 grams, 4 grams, and 8 grams. The output of the experiment (the dependent variable) was the number of molecules of product formed per minute at (106). RESULTS Test Tube # | pH Level | Amount of Substrate | Number of Molecules of Product Formed per Minute (106) | Test Tube #1 | 3 | .5g | 19 | Test Tube #2 | 3 | 1.0g | 39 | Test Tube #3 | 3 | 2.0g | 82 | Test Tube #4 | 3 | 4.0g | 96 | Test Tube #5 | 3 | 8.0g | 96 | | | | | Test Tube #1 | 5 | .5g | 39 | Test Tube #2 | 5 | 1.0g | 81 | Test Tube #3 | 5 | 2.0g | 168 | Test Tube #4 | 5 | 4.0g | 198 | Test Tube #5 | 5 | 8.0g | 198 | | | | | Test Tube #1 | 7 | .5g | 72 | Test Tube #2 | 7 | 1.0g | 145 | Test Tube #3 | 7 | 2.0g | 300 | Test Tube #4 | 7 | 4.0g |
StudyBlue Flashcard Printing of Lab Final 2211L UGA http://www.studyblue.com/servlet/printFlashcardDeck?deckId=... In the distillation experiment, the purpose of a fractionating column was to Which liquid would be most easily separated from water by simple distillation? 1. 1-propanol (bp=97 degrees C) 2. 2-propanol (bp=82 degrees C) 3. tetrahydofuran (bp=65 degrees C) 4.
ABSTRACT Isopropyltoluene isomers were synthesized through the friedel-crafts alkylation of toluene with 2-chloropropane in the presence of aluminum chloride as a catalyst. Through extraction of the distillate with water and 5% NaHCO3, followed by a fractional vacuum distillation, the desired aromatic organic compound was isolated. Infrared Spectroscopy and Gas Chromatography were used to analyze the composition, purity and to confirm the identity of the prepared product. The sample weighed approximately 2.66g, which reflected a low yield at 47%. However, from the GC the area % (also known as percent purity) was 91.8%, which indicates that a very pure product was obtained.
In the first part, five 100 mL flasks of 5 mL ligand solution, 5 mL 2 M sodium acetate, 4 mL 3 M NH2OH, and 1-5 mL Fe2+ solution are diluted with water. The absorption spectrum for varying concentrations of Fe2+ are measured using a spectrophotometer and the data is graphed in Excel. The slope of the line is ε in the Beer-Lambart equation A = εcl. In the second part of the experiment, eleven flasks containing diluted stock solutions of Fe2+ and ligand are mixed with 5 mL 2 M sodium acetate and 4 mL 3 M NH2OH and diluted with water. The absorption spectrum is measured using a spectrophotometer and the data is graphed in Excel.
Magic marker inks are often mixtures of several compounds. Paper chromatography is a common method of separating various components of a mixture. After separation, you can observe the different colors that make up a particular color of magic marker ink. You can also calculate a ratio Rf, which compares how far each compound traveled to how far each solvent (substance that dissolves another substance) traveled during the experiment. Rf = Ds/Df Ds = Distance traveled by the compound Df = Distance traveled by the solvent Materials: coffee filter, tape, isopropyl alcohol (rubbing alcohol), water, 3 different color magic markers (not permanent); 3 identical tall, narrow drinking glasses; metric ruler, 3 pencils Pre-lab Questions: List one extensive and one intensive property of marker ink.
The concentration of a solution is the amount of solute that is dissolved into each unit of solvent. In this lab, water (H2O) will be the solvent and sugar/sucrose (C12H22O11). When the density of the solute is greater than the density of the solvent, the density is directly proportional to the concentration of the solute. The relative density of the solute to the solvent can be observed by placing some solute into the solvent without mixing. If the solute floats, then the density of the solvent is greater than the density of the solute.
108. Two common sugars, glucose or C6H12O6, and sucrose or C12H22O11, are both carbohydrate4s. Their standard enthalpies of formation are: Glucose = -1273 kJ/mol and Sucrose = -2221 kJ/mol. Using this data: a) Calculate the molar enthalpy of combustion to CO2 (g) and H2O (l). b) Calculate the enthalpy of combustion per gram of each sugar.
EXPERIMENT: TECH 0704, Distillation, macroscale technique only, simple and fractional: Substitute a mixture of 25 mL ethanol and 25 mL water for the toluene/cyclohexane mixture. Record the temperature at 2 mL intervals of distillate. Use glass beads to pack the fractionating column. Construct a graph of temperature vs volume for each distillation in your lab notebook. Compare the efficiencies of the two distillation methods in your lab notebook.
(2.) The enzyme with its substrate was exposed to three different pH levels. The pH levels that the enzyme with its substrate was exposed to are 3, 7, and 9. The rate of reaction with the exposure of each pH level was then measured. The dependant variable of this experiment will be the rate of reaction of the enzyme catecholase with its substrate catechol.
Chemistry 75a | Experiment1: Solubility | George Sayegh | | Dr. Tjandra | 9/3/2013 | | Purpose: To be able to gain a good understanding in solubility behaviors through polarity and Acid-Base techniques. In the experiment we will gain an understanding of the structural futures of a substance that determines its solubility in various solvents. Experimental and Data/Result: Part A: Solubility of Solid Compounds: In this Part A of the experiment we will test the solubility of 3 organic compounds, Benzophenone, Succinic Acid, and Biphenyl in the same method for all three. To each organic compound we will add water (highly polar), Methyl Alcohol (intermediate polar), and Hexane (non-polar). Using these 3 testers we will see the solubility of each organic compound and also how it relates to the