Title The absorption spectrum of methyl orange Aim To prove beer lamberts law Introduction This experiment is to prove Beer lamberts law‚ which states that absorbance is proportional to concentration. Part one materials 1. Colorimeter 2. Methyl orange 3. Potassium permangate 4. Cuvette 5. Deionised water Part one methods 1. Rinse one cuvette with deionised water 2. Fill one cuvette with deionised water and “zero” the colorimeter machine 3. Fill the cuvette that
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Preparation of a mixture of methyl‚ ethyl and 2-propyl salicylates and determination of % ratio by GC and HNMR spectroscopy INTRODUCTION: Figure 1: Formation of ester from carboxylic acid. MECHANISM: When the carboxylic acid is treated along with the acid catalyst and alcohol[R-OH]‚ It gives rise to the formation of ester along with water. Furthermore alcohol is used in an excess amount
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This peak is a singlet which indicates that the aldehyde proton is not coupled to any other proton this is because the carbon adjacent does not contain any hydrogens. This would be consistent with the aldehyde group being directly attached to the benzene ring. If the peak was between 9.4 and 10 ppm this would be consistent with the aldehyde group being bound to a linear carbon system. As this peak is between 9.7 and 10.5 ppm2 this expected for an aldehyde proton attached to an aromatic
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Introduction Spectrophotometer is an optical instrument that measures and shows how much light energy is transmitted by a substance in solution at different wavelengths of radiant energy. Light passes into a monochromator where only a very narrow range of wavelengths can pass through. From there‚ light is transmitted through a sample solution‚ and on to a phototube where the light energy is converted to an electric current that is registered on a meter. To measure the amount of light absorbed
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Name : Joanne Wong Student ID : 00000012636 (BM1/14) Title : Spectrophotometer and its function Introduction Spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength.[1] It can measure any of the listed light ranges that usually cover around 200 nm - 2500 nm using different controls and calibrations. [1] There are a few types of spectrophotometer such as calorimeter‚ UV spectrometer‚ IR spectrometer‚ atomic
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reduced mass and point group were obtained for each of the molecules created. In addition the energy in Hartee for each molecule was also obtained. The molecules used were Iodine (I2)‚ Carbon Monoxide (CO)‚ Cyanide ion (CN-)‚ Acetonitrile (CH3CN) and Benzene (C6H6). The energy equations used previously allows one to solve the Schrodinger equation for molecular energies. The Hamiltonian operator in the energy equation‚ containing the electron correlation is more complicated and cannot be solved. The
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CHNG 1103 INTRODUCTION OF MATERIAL AND ENERGY TRANSFORMATIONS COURSE NOTES PART A: MATERIAL BALANCE GENERAL INFORMATION LECTURERS Dr. Marjorie Valix (Part A: Material Balance) email: mvalix@usyd.edu.au office: Rm 444 Chemical Engineering Blg. Phone: 93514995 (Direct) or 9351 2455 (General Office/Messages) Dr. Vincent Gomes (Part B: Energy Balance) Email: vgomes@usyd.edu.ua Office: Rm 452 Chemical Engineering Blg. Phone: 9351 4868 TEXTBOOK R.M. Felder and R.W. Rousseau “ Elementary
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Oppau Explosion 7. The Halifax explosion 8. The Texas City Disaster 9. June 3‚ 1989‚ natural gas explosion in the Ural Mountains 10. August 10‚ 2008‚ Sunrise Propane Industrial Gases explosion 11. The Piper Alpha explosion 12. 1924 Nixon Nitration Works explosion 13. Boston Molasses Disaster 14. the Donora Smog of 1948 15. The Phillips Disaster 16. The Bombay explosion 17. Cleveland East Ohio Gas Explosion 18. Enschede fireworks disaster 19. Flixborough disaster 20. Louisville sewer
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2011 at N402. Abstract EXPERIMENT NUMBER ONE IS ALL ABOUT THE ELECTROPHILIC SUBSTITUTION OF AROMATIC COMPOUNDS. AROMATIC COMPOUNDS ARE THOSE ORGANIC COMPOUNDS WHICH HAVE BENZENE RING (CYCLOHEXA-1‚3‚5-TRIENE). AROMATIC COMPOUNDS ARE ALWAYS FOLLOWS THE SUBSTITUTION REACTION BECAUSE OF THE STABILITY OF THE BENZENE RING. IT WILL NOT PROCESS THE ELIMINATION‚ ADDITION OR REARRANGEMENT REACTION. THIS EXPERIMENT WILL DETERMINE THE FACTORS OF ELECTROPHILIC SUBSTITUTION ON DIFFERENT AROMATIC RINGS
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Synthesis of Methyl Salicylate from Aspirin Esters are a class of organic compounds. An ester compromises an organic or inorganic acid in which one or more hydroxy (OH) groups have been replaced by and alkoxy (O-alkyl) group. For example‚ the simplest ester‚ methyl formate (CHOOCH3)‚ is made up of formic acid (CHO-OH) in which the hydroxyl group has been replaced by a methoxy group (-OCH3). Similarly‚ ethyl acetate (CH3CO-OCH2CH3) is made up of acetic acid (CH3CO-OH) in which the hydroxy group
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