not dissolve the solid so that the recrystallized product precipitates out of the solution. We choose acetone as our solvent. Acetone was able to dissolve our solid at boiling point and recrystallize it in an ice bath. Hexane was not chosen as the solvent because it would not dissolve the solid at boiling point and Ethanol dissolved the solvent completely at room temperature. Questions: 2.A) Acetone = contains alpha hydrogen‚ aldol condensation product: B) 3- pentanone = contains alpha hydrogen
Premium Aldehyde Carbonyl Aldol condensation
It was found that the concentration of chlorophyll a was 1.590 mol/L‚ chlorophyll b was 0.9568 mol/L‚ and this resulted in a total concentration of chlorophyll to be 2.547 mol/L. The concentration of carotenoids was found to be 0.3858 mol/L. When looking at the peaks shown in the absorption spectra it is possible to identify which peak correlates with which compound. Figure 2 contains a peak at around 500 and 700 nm which is a good indicator that that would-be chlorophyll b. This makes sense because
Premium Oxygen Photosynthesis Light
DISTILLATION- SEPARATION OF A MIXTURE Ronald Ogbu‚ Alex 27th Aug. 2013 Purpose: To separate mixture of acetone and toluene using simple‚ packed and unpacked distillation columns. Results and Discussion: There were three distillation setups: simple‚ unpacked and pack fractional. All three procedures had different distillation apparatus but the unknown mixture was the same for all. The unknown liquid in a 50 ml round bottom flask was heated in a heating mantle such that a
Premium Distillation Separation process
CLASSIFICATION TESTS FOR ORGANIC HALIDES James Anand L. Regala‚ Sabrina Nicolle G. Sarte‚ Ann Michelle Siao‚ Michael Sibulo‚ Victoria Tan Group 8 2C Pharmacy Organic Chemistry Laboratory ABSTRACT This experiment is done to classify organic halides. Most organic halides are synthetic and are not flammable. One way to classify organic halides is by classifying its -carbon atom as primary‚ secondary or tertiary. If the -carbon is attached to one R group‚ it is then primary. If the -carbon is
Premium Sodium chloride Organic chemistry Iodine
Section 1 As a member of Group 2‚ we were investigating why the liquids Ethanol‚ Propanol‚ Water‚ Pentane and Acetone evaporate at different rates. Methanol and Butanol were not liquids investigated by our group‚ but collectively as a class we were able to record averages of rates of evaporation. Solvent Molecular Formula Boiling Point (C°) Polar or Nonpolar Intermolecular Force(s) Lewis Dot Structure Methanol CH4O 64.7 Polar Hydrogen Bonding Dipole-Dipole London Dispersion Ethanol C2H6O 78.37
Premium Water Boiling point Evaporation
Constant variable: 1. Volume of pure acetone 2. Molarity of | 1. | Table 1 shows the variables in this experiment APPARATUS & MATERIALS Apparatus/ materials | Quantity | Large boiling tube | 1 | Large test tube rack | 1 | Cork stopper with pin hook | 1 | Strip of filter paper (Goodman) | 1 | Capillary tube | 1 | Fresh spinach leaves | 10g | Fresh solnostemon hybrid leaves | 10g | Chromatography solvent (9:1 petroleum ether-acetone) | 3mL | Measuring cylinder (20mL)
Free Photosynthesis Chlorophyll Thin layer chromatography
pigment containing chloroplasts. Upon adding a solvent mixture of hexane and acetone‚ the chlorophyll and carotene pigments can be extracted from the chloroplasts. Further decanting of the dark green fluid from the cloudy light green material will remove impurities from the extracted pigment. To perform thin layer chromatography‚ a dot of the extracted pigments is placed on a (TLC) plate. By using different ratios of Hexane: Acetone as a mobile phase in (TLC) we should be able to determine which solvent
Premium Thin layer chromatography Purple Color
acquaint oneself with the fundamentals of the Aldol Condensation reaction by demonstrating the synthesis of dibenzalacetone (trans‚ trans-1‚5-Diphenyl-1‚4-pentadien-3-one) through the aldol condensation of acetone with benzaldehyde. The synthesis began by using a strong base to generate the acetone enolate ion. The ketone/enol tautomerization is an equilibrium process that produces little of the enol (ppm or less). However‚ any enol that formed quickly reacted with the strong base to form the enolate
Premium Carbonyl Aldehyde Aldol condensation
Experiment 1: Quantitative assessment of Some Cellular Constituents Summary: Euglena gracilis are unicellular organisms in the Protist Kingdom. They are known to have both plant and animal characteristics. Although‚ Euglena cells contain a variety of cellular constituents‚ their cellular constituents should be presented in equal ratio. The objective of this experiment is to determine Euglena’s cellular components in cells and then to establish their cellular constituents by comparing the experimental
Premium Chemistry Eukaryote Chromosome
evaporate quickly and which will take longer to evaporate. Give reasons for your predictions. I predict that acetone‚ or C3H6O‚ will evaporate the quickest because there is no hydrogen bonds between oxygen and hydrogen. Therefore and London Dispersion bond is created which is very weak and doesn’t take much energy to break. The second liquid to evaporate will be isopropyl. C3H8O also like acetone doesn’t allow its oxygen to bond with any hydrogen therefore not creating hydrogen bonds. Also due to the
Premium Water Evaporation Oxygen