TEST FOR | TEST METHOD | OBSERVATIONS | TEST CHEMISTRY and comments | ALKENE or alkyne i.e. any non-aromatic unsaturated hydrocarbon with a double or triple carbon-carbon bond. | Bubble gas through‚ or add liquid to‚ a solution of bromine in hexane or water. | The orange/brown bromine rapidly decolourises‚ as a saturated colourless organic bromo-compound is formed. | R2C=CR2 + Br2 ==> BrR2C-CR2BrRCCR + 2Br2 ==> Br2RC-CRBr2R = H‚ alkyl or arylSaturated alkanes give no fast reaction with bromine
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aliphatic compounds are named based on the first ten alkanes (Table 14-1). As a rule‚ hydrocarbons with names ending in -ANE are alkanes‚ -ENE are alkenes‚ and -YNE are alkynes. Name Molecular Formula methane ethane propane butane pentane hexane heptane octane nonane decane Carbons 1 2 3 4 5 6 7 8 9 10 CH4 C2H6 C3H8 C4H10 C5H12 C6H12 C7H16 C8H18 C9H20 C10H22 Alkane Series For example‚ if a hydrocarbon had four carbons with no multiple bonds‚ it would be named
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Micah Bolivar MWF 8:30-9:30 ULTRAVIOLET-VISIBLE SPECTROMETRY A diagram of the components of a typical spectrometer are shown in the following diagram. The functioning of this instrument is relatively straightforward. A beam of light from a visible and/or UV light source (colored red) is separated into its component wavelengths by a prism or diffraction grating. Each monochromatic (single wavelength) beam in
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Top of Form Bottom of Form Chemical Compound Formulas Chemistry is the study of the composition of matter and its transformation. A substance can be considered matter with definite properties that establishes its identity. The tremendous number of chemical compounds has been categorized into numerous categories. A broad classification distinguishes between inorganic and organic compounds. Organic compounds are carbon based. Inorganic compounds exclude compounds exclude compounds based on carbon
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Introduction Modernists perceive organisations as tangibly factual bodies operating in the reality. When the organisation has been well designed and managed‚ the systems of actions and decisions made will be driven by the norms of rationality‚ efficiency and effectiveness to realize the organisation goals such as mission and vision. (Hatch‚ 1997) Critical Theorists view organisation as places where inequalities in power relations will dominate‚ resulting in the exploitation and estrangement of proletariat
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acetone which produces a filtered and concentrated reddish-brown extract (149.3g). 75g of the extract is dissolved in EtOAc and filtered. The filtrate (17.5g) is coated with Celite 545. Silica gel column chromatography (6.9cm i.d. x 35cm) with an n-hexane-EtAOc gradient is performed on the filtrate. A re-chromatograph by silica gel column (2cm i.d. x 40cm) eluted with CHCl3-MeOH gradient is done for the eluate that was produced by the silica gel column chromatography previously. The final eluate‚ 3
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CHEMISTRY 101 FINAL EXAM SECTIONS 572-580 Dr. Joy Heising FORM 4N December 7‚ 2001 Directions: 1. Fill out your scantron sheet. a. Do not forget to include your SIGNATURE and ID number. b. Dept = CHEM‚ Course No. = 101 c. If you want your scores posted‚ mark A under the option column 2. Use a #1 or #2 pencil for marking the answer sheets. circles completely. 3. DO NOT write on the envelope. 4. Read each question carefully‚ then choose the best answer for each question. There is no penalty
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INTERNATIONALE PHARMACEUTICA SCIENCIA | Jan-March 2011 | Vol. 1 | Issue 1 | Available online http://www.ipharmsciencia.com ©2011 IPS REVIEW ARTICLE Phytochemical screening and Extraction: A Review ABSTRACT Plants are a source of large amount of drugs comprising to different groups such as antispasmodics‚ emetics‚ anti-cancer‚ antimicrobials etc. A large number of the plants are claimed to possess the antibiotic properties in the traditional system and are also used extensively by the tribal people
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Chapter 14 Lecture Outline Prepared by Andrea D. Leonard University of Louisiana at Lafayette Copyright © The McGraw-Hill Companies‚ Inc. Permission required for reproduction or display. Organic Compounds that Contain Oxygen‚ Halogen‚ or Sulfur Four families of compounds that contain a C atom singly bonded to O‚ S‚ or X (F‚ Cl‚ Br‚ or I) are: 1. Alcohols‚ which contain an OH (hydroxyl) group 2. Ethers‚ which have two alkyl groups bonded to an O atom 2 Organic Compounds that Contain
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Chemical Earth 1. The living and non-living components of the Earth contain mixtures Construct word and balanced formulae equations of chemical reactions as they are encountered 1. Build a word equation Reactants on left‚ Products on right 2. Convert word equation into chemical formula for the reactants and products Using valency rules 3. Balance the equation Adjust coefficients to get equal numbers of each kind of atom on each side 4. Specify the physical state for each species present
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