Molal Freezing Point and Boiling Point Constants | Solvent | Formula | Freezing Point (°C) | Kf(°C/molal) | Boiling Point (°C) | Kb(°C/molal) | Water | H2O | 0.0 | 1.86 | 100.0 | 0.51 | Acetic acid | CH3COOH | 17.0 | 3.90 | 118.1 | 3.07 | Benzene | C6H6 | 5.5 | 4.90 | 80.2 | 2.53 | Chloroform | CHCl3 | –63.5 | 4.68 | 61.2 | 3.63 | Ethanol | C2H5OH | –114.7 | 1.99 | 78.4 | 1.22 | Phenol | C6H5OH | 43.0 | 7.40 | 181.0 | 3.56 | Use the previous formula and the constant from Table 1 to
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executive suite that traces of benzene had been found in its bottled water Ronald Davis‚ President of Perrier Group of America ordered an intensive recall of all Perrier bottles in North America Few days later Perrier S.A. expanded the recall to the rest of the world Good? Or Bad? Perrier Caught in a Lie At first the excuse given by Perrier officials was that the contamination occurred because an employee mistakenly used cleaning fluid containing benzene to clean the production-line machinery
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Carboxylic acids are compounds which contain a carboxyl group‚ -COOH group‚ where the -COOH group is attached either to a hydrogen atom or to an alkyl group. One of the example of carboxylic acid is benzoic acid( benzene carboxylic acid) which has a benzene connected to the carboxyl carboxyl group‚ -COOH group. It has a formula of C6H5COOH. The carbon atom of a carboxyl group has a high oxidation state. Therefore‚ that many of the chemical reactions used for their preparation are oxidations. In
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22.12.2009 EN Official Journal of the European Union L 342/59 REGULATION (EC) No 1223/2009 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 30 November 2009 on cosmetic products (recast) (Text with EEA relevance) THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EURO PEAN UNION‚ (5) Having regard to the Treaty establishing the European Commu nity‚ and in particular Article 95 thereof‚ Having regard to the proposal from the Commission‚ Having regard to the opinion of the European Economic
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concentration and absorbance of the coloured solutions methyl orange and bromophenol blue. • To be able to rightly operate a spectrophotometer to assess the absorbance at various wavelengths • To be able to identify the main component parts of a spectrophotometer • To be able to draw a ‘Standard Curve’ from the data collected • To be able to calculate the ‘percentage absorption coefficient’ for the solutions methyl orange and bromophenol blue. Method: The method
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PEP Process Module 1 19 Aug 1999 SRI Consulting Process Summary This Aspen Plus model simulates the production of acetic acid by low pressure methanol carbonylation in the presence of a heterogeneous rhodium (Rh) catalyst and the promoter methyl iodide. It is intended to resemble the Chiyoda/UOP Acetica™ process‚ a novel heterogeneous methanol process for the production of acetic acid. This technology is based on a heterogeneous Rh catalyst in which the active Rh complex is chemically
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Coleman Chem 3411 Dr. Eidell October 24‚ 2014 Preparation and IR Analysis of 2-chloride-2-methylbutane Line Reaction Abstract The purpose of this experiment was to react 2-methyl-2-butanol with concentrated HCl in order to form 2-chloride-2-methylbutane. The hydrogen for the HCl make the -OH from the 2-methyl-2-butanol into a good leaving group because H2O is formed. The H2O leaves and Cl- is free to bond with the carbocation creating 2-chloride-2-methylbutane. The materials needed for the
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easily accessible. Different sets of genes are active in different cell types. 2. Yes‚ as cells grow and divide‚ cellular machinery faithfully copies epigenetic tags along with the DNA. Using the original DNA strands as a template‚ methyl copying enzymes attach methyl tags to newly replicated DNA copies. One original DNA strand and one copy will be passed to each daughter cell. 3. As twins age their environments begin to differ. Their genomes remain the same‚ but signals from the environment act
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Rate of Evaporation of Different Liquids Objective of the Project This project is of the rate of evaporation of different liquid‚ in which we also discuss the factors which affect the rate of liquid. Introduction When liquid is placed in an open vessel. It slowly escapes into gaseous phase ventually leaving the vessel empty. This phenomenon is known as vaporization or evaporation. Evaporation of liquids can be explained in the terms of kinetic molecular model although there
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of the stomach. In this experiment we synthesized salicylic acid from methyl salicylate. We converted the functional group known as an ester into a functional group known as a carboxylic acid. Methyl salicylate is also a botanical extract. It is the major constituent of oil of wintergreen‚ which makes up over 90% of the essential oil from the wintergreen plant. It is also a common flavoring in candy. However‚ most methyl salicylate used in foods is made synthetically‚ a cheaper process than its
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