Mass of methyl benzoate = Density × Volume = 1.094g/mL × 2.8mL = 3.0632g Mole of methyl benzoate = Mass ÷ Molecular mass = 3.0632g ÷ 136.15g/mol = 0.0225mol C6H5COOH3 + HNO3 C6H4COOH3NO2 + H2O 1mole of C6H5COOH3 will form 1 mole of C6H4COOH3NO2 . 0.225mole of C6H5COOH3 will form 1 mole of C6H4COOH3NO2 . Theoretical mass of methyl-3-nitrobenzoate = 0.0225mol × 181.4g/mol = 4.07565g
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solvent. The H- of the NaBH4 reduces one or both carbonyl groups in benzil and then the acidification processes results in a diol or two secondary alcohols as products. If only one carbonyl group is reduced‚ the product results in a racemic mixture of benzoin. If both carbonyl groups are reduced‚ the product results in a meso-hydrobenzion or a racemic mixture of hydrobenzion. The goal of the experiment is for the student to reduce benzil and use melting point‚ TLC‚ and IR to determine the stereochemistry
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Department of Pure and Applied Chemistry College of Arts and Sciences Visayas State University Name: Almera P. Padolina Course & Year: BS Chem 2 Date Performed: July 24‚ 2012 Date Submitted: August 6‚ 2012 Experiment No. 4 Solubility Equilibrium- Common Ion Effect INTRODUCTION: The common ion effect is another example of Le Châtelier ’s Principle in action.The common ion effect tells us that the solubility of an
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standard solution is one of the oxidation-reduction titration methods. KMnO4 is a vigorous oxidant in an acidic solution‚ and its electrode reaction and standard electrode potential φ are as follows‚ MnO4- + 8H+ Mn2+ + 4H2O φ = + l.51V The contents of many reducible substances can be determined directly or indirectly by the permanganate method. The titration reaction of permanganate method should be carried out in sulfuric acid (H2SO4) solution. Because nitric acid (HNO3) is of oxidization‚ and because
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measured absorbance. Calibrate the spectrometer by using 0.500M HNO3 as the blank. *Determination of an Equilibrium constant Use the larger micropipette with tip to place 1.00 mL of 5.00 x 10-3 M Fe3+ (in 0.500 M HNO3 (aq)) in a clean‚ dry cuvette. This is not the same Fe3+ solution used in the earlier Beer’s Law portion of the experiment. Using the smaller micropipette with tip‚ add 0.20 mL of 0.00100 M HSCN (in 0.500 M HNO3 (aq)) to the cuvette. Stir the mixture by carefully drawing up the
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CHEMISTRY PRACTICALS CLASS-XII EXPERIMENT No. 1 AIM – (a) To prepare 100ml of M/20 solution of oxalic acid. (b)Using this calculate the molarity and strength of the given KMnO4 solution. APPARATUS AND CHEMICALS REQUIRED- Oxalic acid‚ weighing bottle‚ weight box‚ volumetric flask‚ funnel‚ distilled water‚ chemical balance‚ beakers‚ conical flask‚ funnel‚ burette‚ pipette‚ clamp stand‚ tile‚ dilute H2SO4‚ KMnO4 solution. THEORY- (a) Oxalic
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Investigation 3 Determine the Limiting Reagent Chemistry Investigation 3 Limiting Reagents Aim: To determine the limiting reagent in a reaction. Hypothesis: if the number of moles of the solutions added together equals the stoichiometry ratio in the balanced equation‚ then we would not expect a limiting reagent in the reaction. Independent variable: The number of moles of the reactants Dependent Variable: The limiting reagent Constant Variable: The volume of reactants added Equipment:
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Investigating the Determining Characteristics of Cations and Anions Chem 111 Sec 560 Introduction: The purpose of this lab was to study the specific characteristics of cations and anions‚ and ultimately to be able to identify an unknown substance based on our studies and tests using the logic trees developed through the experiment. A logic tree is a graphical display of the findings from this lab which‚ through a series of yes/no questions‚ elimination
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Chemistry Project on STUDY OF ADULTERANTS IN FOOD CHEMISTRY PROJECT WORK INVESTIGATORY PROJECT STUDY OF ADULTERANTS IN FOOD-STUFFS Name: Taher Shabbir Hussain Class: XII-B School: Indian Public School Year: 2009-2010 iC BS E.c om Chemistry Project on STUDY OF ADULTERANTS IN FOOD iC BS 2|P a ge E.c om Chemistry Project on STUDY OF ADULTERANTS IN FOOD Certified to be the bonafide work done by Mr. / Miss in the _ TAHER SHABBIR HUSSAIN of class XII
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I. Objective: The objective of this experiment is to determine the mass percent of iron in an iron compound using a spectrophotometer. From there‚ determine which iron compounds are in the stock room bottles based off of the experimental mass percent results. II. Introduction: The objective is to determine the mass percent of iron in an iron compound using a spectrophotometer. From there‚ determine which iron compounds are in the stock room bottles based off of the experimental mass percent results
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