Task 3: How could Thin Layer Chromatography (TLC) have been used to prepare a pure sample of aspirin? The method of using thin layer chromatography is easy‚ quick and relatively cheap to carry out this makes it ideal for preparing pure samples of aspirin. Equipment Required: • Thin Layer Chromatography Paper • Ruler • Pencil • Solvent • Beaker • Micro Capillary • Access to a fume cupboard • UV light • Clingfilm • Individuals sample of aspirin • Pure sample of aspirin • Sample of salicylic acid Method:
Premium Chemistry Water Bacteria
Lab #3: Ion Exchange Chromatography Objective The purpose of this experiment was to separate proteins on the basis of their net charge at a particular pH. In cation exchange chromatography positively charged molecules are attracted to a negatively charged column. Conversely‚ in anion exchange chromatography‚ negatively charged molecules are attracted to a positively charged column. Experimental results could be monitored in a predictable way by controlling running pH‚ salt concentration‚ and by
Premium Electric charge Electron
Fos 108 review Math refresher 1. Qualitative = IDENTITY of a material‚ Quantitative = PERCENT COMBINATION‚ order of operations PEMDAS‚ 2. Units of length: meters (m) a. millimeters (mm): 1mm = 1-3m = 1/1000 m b. centimeters (cm): 1cm = 1-2m = 1/100 m c. kilometers (km): 1km = 13m = 1000m 3. Units of mass/weight: grams (g) a. milligrams (mg): 1mg = 1-3g = 1/1000 g b. kilograms (kg): 1kg = 13g = 1000g 4. Units of volume: liters (L) a. milliliters (mL): 1mL = 1-3L = 1/1000 L Percent of
Premium Chromatography Analytical chemistry Chemistry
Allii Sativi Bulbus Pulveratus Powdered Bawang Bulb * Allii Sativi bulbus Pulveratus is Allii Sativi Bulbus that has been cut‚ freeze-dried or dried at a temperature not exceeding 65˚C‚ and reduced to a powder. Packaging and Storage – Preserve in well-closed‚ light-resistant containers in a cool‚ dry place. Labeling – Print the Official Title and the National Title of the powdered bulb on the label as directed under General Notices and Requirements Part II. Botanic characteristic (see
Free Chromatography Thin layer chromatography Ethanol
Tennessee Williams depicts a young man who was falling in love with the same sex individuals. The protagonist had to choose between a socially accepted life of a desperate man and a life of accepting herself with constant disdain from the general public. Candy Delaney‚ a protagonist‚ was a member of LGBT community decided to accept herself. Williams stated that each individual decided what was more important social norms or own desire. Author depicted
Premium Love English-language films Personal life
The Twix: a candy bar that has been giving consumers a delectable crunch since 1967 (although under various names). Many people alive today grew up with the candy. As a result‚ the marketing techniques used in Twix commercials have changed in numerous ways so they could better appeal to the American people. Recently‚ Twix has released an ad campaign‚ called the “Left Twix Versus Right Twix Pick a Side” campaign‚ which features a rivalry between the two creators of Twix‚ who split the company to
Premium Massachusetts
Food Chemistry xxx (2010) xxx–xxx Contents lists available at ScienceDirect Food Chemistry journal homepage: www.elsevier.com/locate/foodchem Accumulation of vasicine and vasicinone in tissue cultures of Adhatoda vasica and evaluation of the free radical-scavenging activities of the various crude extracts G. Roja a‚⇑‚ B.H. Vikrant b‚ Santosh Kumar Sandur c‚ Asmita Sharma d‚ K.K. Pushpa d a Nuclear Agriculture and Biotechnology Division‚ Bhabha Atomic Research Centre‚ Trombay‚ Mumbai
Premium Herbalism Chromatography Antioxidant
Solubility as a Property of Matter A Lab of Chemicals‚ Chromatography‚ and Crime! Chemistry is a natural science that deals with the composition of matter and the changes it undergoes. At crime scenes‚ investigators often find unknown materials that need to be identified. If an unknown material is a mixture‚ an investigator may want to know one or two things about it: What are the ingredients of the mixture? Is the mixture found at the scene the same as a known mixture? A mixture is a collection
Premium Chemistry Chemical substance Solubility
in the BIOL 1F90 Laboratory Manual (Martin‚ 2013)‚ Experiment # 1‚ pages 2-5. Results: Table 1: Culture Sample Chromatography Rf Values Sample of Spot Distance from Origin (mm) Solvent Front (mm) Rf Value Color A 6.0 57.0 0.22 Bluish green B 17.5 56.0 0.105 Dark green blue C 4.0 57.0 0.070 Greenish blue D 4.0 47.0 0.085 Green E 10.5 56.5 0.186 Light blue Figure 1: Chromatography- TLC sheet From left to right- acetic acid‚ citric acid‚
Premium Chemistry Metabolism Enzyme
These RF values were valuable information‚ however they did not determine which solution an IR spectrum would be obtained for. This was determined by the strongest‚ or more visible spot on the plate. An error for this lab could have occurred at this point because the wrong spot was chosen. If the RF values were used to determined which spot to choose‚ results may yield a smaller presence of pure naphthyl ether and a larger presence of dichloromethane in the IR spectrum. The spot that is most visible
Premium Thin layer chromatography Chromatography Chemistry