In this experiment Methyl salicylates are prepared along with ethyl and 2-propyl salicylates in which the reaction proceeds with salicylic acid as the starting material along with the other reactants such as methanol‚ ethanol and 2-propanol. More specifically‚ sulfuric acid is employed as the suitable acid catalyst. FIGURE 2: Formation of methyl salicylate from salicylic acid. 2. CALCULATION: PERCENTAGE
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Additives Lab Purpose The purpose of this lab is to test what effect of Nicotine‚ Acetylcholine‚ Epinephrine‚ Caffeine‚ and Ethanol on an organism’s heart rate. Materials * Microscope * Eye dropper * Pipet * Cotton balls * Depression slide * Beakers * Daphnia * Water * Five additives: Nicotine‚ Acetylcholine‚ Epinephrine‚ Caffeine‚ Ethanol Procedure 1. Put on safety goggles. 2. Catch a living Daphnia. 3. Transfer to a depression slide and add water
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The type of alcohol was found to have an affect of the rate of the reaction. Ethanol has the higher reaction rate than n-propanol‚ n-butanol‚ and iso-butanol. Exercise 1: Alcohol Dehydrogenase 4. Table for calculation of [NADH]eq‚ [NAD+]eq‚ [Ethanol]eq Keq={NADH] [Acetaldehyde] / [NAD+] [Ethanol] c=A/ ab a=6.2 mM-1cm-1 [NADH]eq [Acetaldehyde]eq [NAD+]eq [NAD+] [Ethanol] [Ethanol] Keq (mM) (mM) (mM) (mM) (mM) (mM) 1 Blank
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Department of biology Faculty of Science and Mathematics Universiti Pendidikan Sultan Idris LABORATORY REPORT SBT 1013: INTRODUCTION TO BIOTECHNOLOGY Semester 4 Sessions 2013/2014 ID NUMBER AND NAME 1. SITI NURFATINI BINTI MOHAMAD ROSLAN (E20131007560) 2.NURHAFIZAH BINTI SAMSUDDIN (E20131007584) 3.MUNIRAH BINTI HARON (E20131007556) 4.NORSYAWANI BINTI SUPIAN (E20131007577) LECTURER : CIK FATIMAH EXPERIMENT NO. : EXPERIMENT NO.1 TITLE : EXTRACTION OF DNA
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Results: Figure [ 1 ] (Temp1: Ethanol; Temp2: n-Propanol) Figure [ 2 ] (Temp1: 1-Butanol; Temp2: n-Pentane) Figure [ 3 ] (Temp1: Methanol; Temp2: n-Hexane) Chart [ 1 ] Chart [ 2 ] Chart [ 3 ] Table [ 1 ] Alcohols | Molecular Weight (g) | ∆T (°C) | Ethanol | 46.068 | 9.17 | 1-Propanol | 60.09 | 6.72 | 1-Butanol | 74.12 | 3.35 | Methanol | 32.04 | 15.615 | | | | | Calculations: 1. Calculating Molecular Weight a. Substance: Ethanol b. Formula: C2H5OH
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Nissim Ezekiel (Marathi: निस्सिम एझेकिएल; 14 December 1924 – 9 January 2004) was an Indian Jewish poet‚ playwright‚ editor andart-critic. He was a foundational figure in postcolonial India’s literary history‚ specifically for Indian writing in English. He was awarded the Sahitya Akademi Award in 1983 for his Poetry collection‚ "Latter-Day Psalms"‚ by the Sahitya Akademi‚ India’s National Academy of Letters.[1] Ezekiel was born on 16 December 1924 in Mumbai (Maharashtra). His father‚ Moses Ezekiel
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The equation for the reaction between an acid RCOOH and an alcohol RẬᶦ can be the same or different; at equilibrium‚ the concentrations of both reactants and products are constant. In this experiment set up‚ the reaction between ethanoic acid and ethanol to produce ethyl ethanoate and water is a reversible reaction as shown by the following equation: CH₃COOH + CH₃CH₂OH↔CH₃COOCH₂CH₃ +H₂O The Equilibrium Law states that at equilibrium the ratio [CH₃COOCH₂CH₃][H₂O]/[CH₃COOH][CH₃CH₂OH] is constant
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Introduction The goal of this lab is to understand the principles of chromatography by purifying alcohol using fractional distillation. Running standards with gas chromatography we were able to see and calibrate our data to find not only how much ethanol our alcohol attained but also what a mixed unknown sample contained. Chromatography is a way of being able to separate substances in solution that can help not only identify the analytes (the studied substances) but can determine their concentration
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markers are non-polar substances‚ so it can be easily dissolved by non-polar solvents. Statement of purpose We would like to know whether permanent marker ink is removable by any of the solvents we are going to use in our experiment‚ which are ethanol‚ water‚ acetic acid‚ and soap water. We would also like to know whether the pH scale of a solvent or whether they are polar or non-polar substances can affect the result of
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Experiment C: Identification and Separation of Dyes by TLC Pre-lab Properties: Ethyl acetate‚ ethanol‚ silica‚ azobenzene‚ azulene‚ 4-(p-nitrophenylazo) resorcinol‚ methyl red‚ bromocresol green (solubilities in water and ethanol) Purpose: To identify compounds from an unknown mixture using TLC Up to 100% of missed points can be recovered from this lab Watch the video: http://www.youtube.com/watch?v=e99nsCAsJrw (MIT) TLC plates are near the main hood DO NOT BREAK CAPILLARY TUBES Keep spots small
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