Abstract In this experiment‚ the absorbance of KMnO4 was measured by spectrophotometric method to determine the molar concentration and the molar extinction coefficient of KMnO4. In part 1‚ in order to determine the maximum absorbance wavelength of KMnO4‚ we measured the absorbance of the sample solution which contains KMnO4 at the wavelengths between 330nm and 660nm‚ and plotted the λ and A points; the λmax was 530nm. In part 2‚ the effect of concentration on the absorbance was examined. We prepared
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Eastman solvents—Technical tip Using Eastman methyl acetate in cleaning applications Introduction Considerations Eastman Chemical Company‚ the world’s leading producer of methyl acetate‚ offers this solvent in two grades to suit a variety of application needs: Wide formulation latitude • Regular (industrial) grade offers a minimum assay of 96%‚ a maximum methanol content of 2.5%‚ and a maximum water content of 1.5%. • High purity grade offers a minimum assay of 99.5%‚ a maximum
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ABSTRACT This experiment was conducted to synthesize methyl benzoate form benzoic acid and methanol by using the Fischer esterification method. The Fischer exterification technique is utilized in the academic and industrial settings due to the simplified synthesis and safety parameters of the overall reaction. Both benzoic acid and methanol are relatively cheap to obtain from a commercial source as well as being easy to store with a relatively long shelf life. The Fischer esterification method is
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the phenomenon that I have experienced since I came to the United States from Syria is the consideration of all Arabs as Muslims (Sunni or Shia). People all over the world think that Arabs follow Islam religion; however‚ the facts state that Arabs are 10% Christians‚ 5% follow other faith and 85% Muslims. In general‚ it is also usual to say that Arabs are terrorists‚ which is totally wrong from many points of views because not all Arabs are Sunni or Shia‚ and not all Sunni and Shia are terrorist. After
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Name CHE 173 Sec # January 25‚ 2005 Experiment 36: Determination of the Structure of a Natural Product in Anise Oil Purpose: The purpose of this experiment is to isolate the major component of anise oil and determine its identity and structure using melting point determination and IR spectroscopy. Introduction: The major component of anise oil has the chemical formula C10H12O. This compound is said to be hydrogen deficient‚ meaning that it contains less hydrogen atoms than would be needed for
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is depended on a particular temperature‚ and the concentrations of reactants and products have to follow a rule demonstrated by the equilibrium constant Kc. The equilibrium concentrations that will be studied is the reaction between iron (III) ion and thiocyanate ion: The mixture of Fe3+ and SCN- react to form a compound that produces a dark brown/red color. Since this is the case‚ it means the complex absorbs the most light at a wavelength of around 450-480nm. Using the balanced equation‚ it can
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Exercise 10: Acid/Base Balance Worksheet Assignment Due: Week 1 Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Please make sure that your answers are typed in RED. Please type your Name and Student ID Number here: Michael Rowland 4035527 Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing
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Preparation of methyl m-nitrobenzoate by nitration using methyl benzoate‚ nitric acid‚ and sulfuric acid Aileen Quintana TA: Sijie Tues/Thurs 11:50 42067 Introduction: The purpose of this lab was to explore the concepts of electrophilic aromatic substitution‚ specifically nitration by synthesizing methyl m-nitrobenzoate using methyl benzoate‚ nitric acid and sulfuric acid. This nitration is a type of electrophilic aromatic substitution. A
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2013) 2B-Ph Group 9 Experiment 10 Identifying Carboxylic Acids and Derivatives Through Classification Tests Bianca Therese Rivera‚ Camille Aliana Rivera‚ Zarah Mae Roxas‚ Ma. Rosario Teresa Saylo‚ Jean Darlene Semilla and Adrian Yu Department of Pharmacy‚ Faculty of Pharmacy University of Santo Tomas‚ Espana Street‚ Manila 1008 Date Submitted: September 13‚ 2012 ------------------------------------------------- Abstract Carboxylic acid derivatives namely‚ acyl halides‚ acid anhydrides‚ esters
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------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- EXPERIMENT NO. 4 ------------------------------------------------- COLORIMETRIC DETERMINATION OF pH ------------------------------------------------- Abstract This experiment examined the result of the various color indicators combined with different buffer solution‚ thereby testing the precision and accuracy of determining the pH value
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