into Erlenmeyer flasks and about 100 mL of distilled water was dissolved in. Small quantities of NaHCO3 was added in order to adjust the pH of the solutions until effervescence ceased. About 2 mL of K2Cr04 was added and the solution was titrated with 0.1 M AgNO3 solution to the first permanent appearance of red Ag2Cr2O4. B. Determination of Cl- in solid sample The unknown was dried at 110 for 1 hour and cooled in a desiccator. Individual samples were weighed into each of three 250 mL Erlenmeyer flasks
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EXPERIMENT SIX - ANALYSIS OF STOMACH ANTACID TABLETS Purpose In this experiment you will measure the amount of stomach acid consumed (or neutralized) by various antacid tablets (Maalox‚ Tums‚ Rolaids: no Pepcid or Tagamet!). If you have a favorite one‚ bring a package to the lab (one color only). Inside your stomach‚ excess hydrochloric acid is neutralized by the antacid. Different antacids use different metal hydroxides‚ such as Al(OH)3 or Mg(OH)2. The general formula for this reaction
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solvent. This experiment involved extracting pure solid Trimyristan from ground nutmeg using several separation techniques such as using a reflux apparatus PROCEDURE 2.5 mg of Nutmeg was obtained from a known source and added to a 100 ml round bottom flask. 40 ml of Tert-butylmethylether was added to the
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RECRYSTALLIZATION OF ACETANILIDE De Ocampo‚ Yves Aaron Julian Q.‚ Dela Vega‚ Roderick B. Jr.‚ Elguira‚ Cedric Tristan D. Enriquez‚ Joanne B.‚ Gabat‚ John Elliot N. Group 5 2D-Medical Technology Faculty of Pharmacy‚ University of Santo Tomas ABSTRACT The experiment was executed in order to purify compounds through recrystallization. Recrystallization is the primary used operation for purifying solid organic compounds that differ in solubility at different temperature. It is a process of dissolving
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The Influence of the Amount of Light on Photosynthesis and Transmittance “I pledge that no unauthorized assistance has been given or received in the completion of this work. Experiments described were performed by me and/or my lab group and this write-up is entirely my own creative work.” X________________________________________ I. Introduction Photosynthesis is the process that plants use to convert light energy into chemical energy. The reactants of photosynthesis include carbon dioxide
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year 12 Chemistry – mr symoniw | Extended Experimental Investigation | Food Chemistry | | Yash Kamal | Semester 1 | Index Rationale – 1 Hypothesis – 6 Aim – 6 Materials – 6 Method – 6 Results – 6 Discussion – 10 Conclusion – 17 Recommendations – 17 Appendices and Bibliography – 19-24 Index Rationale – 1 Hypothesis – 6 Aim – 6 Materials – 6 Method – 6 Results – 6 Discussion – 10 Conclusion – 17 Recommendations – 17 Appendices and Bibliography – 19-24 Rationale
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The measured the mass of the filter paper and recorded it to you data table. Set up the funnel‚ filter paper‚ and flask. Gently swirl the reaction beaker to suspend the precipitate. Slowly pour the entire contents‚ a portioned at a time into the filter paper. Rinse the reaction beaker several times with distilled water and then pour it to filter paper to collect all
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Date: May 22‚ 2012 Name: Cristhian Valor Organic Laboratory Pre-Lab 1. Main reaction sequence including side reaction products: 2. 3 Sentence Summary of the Experiment: The OH group on the benzene ring in salicyclic acid reacts with acetic anhydride to form an ester functional group. Thus the formation of acetylsalicyclic acid (aspirin) is referred to as an esterification reaction‚ which requires the presence of H+ (H2SO4 in our case). The technique used to purify the aspirin content
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chloride 100 cm3 volumetric flask Acetone Conical flask Isopropanol Measuring cylinder Bromothymol blue Procedures: 1. 150 cm3 of 0.04M NaOH(aq) is placed in a beaker. 2. 100 cm3 of a 50/50 acetone/watermixture (by volume) is put into a stoppered flask or bottle and is mixed well. 3. 1.00 cm3 (±0.05 cm3) of t-butyl chloride liquid is added in the acetone/water mixture prepared in step 2. 4. The flask is stoppered and shaken well‚ and time is measured. The flask is to be kept stoppered except
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Introduction The purpose to of this experiment is to carry out the alkylation of sodium saccharin with iodo-ethane and analyze the product mixture to determine the structure of the major product. Sodium saccharin is made from the base catalyzed de protonation of saccharin. This nucleophilic reaction is special because the nucleophilic atom can be oxygen or nitrogen and the leaving group is iodide ion. The solvent used in this reaction is very important for determining the rate of nucleophilic
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