reactions‚ you will characterize the crude reaction mixtures to determine if you formed a mix of trans enantiomers‚ the cis product‚ or a mixture of cis and trans diols. (Figure 1) In this experiment‚ you will use a common oxidizing agent‚ KMnO4. You will also use an oxidizer that you may not have discussed in lecture called Oxone ®. Oxone is a persulfate mix that reacts with acetone to produce dimethyldioxirane. Procedure: Oxone reaction Dissolve 0.40 g oxone ® in 2.0 mL of
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Use 10mL pipette to slowly add KMnO4 until solution turns persistent pink or brown color 7. Repeat Steps 1-6 for time intervals of 30‚60‚ 120‚ 180‚ and 360 seconds Test of Catalase Activity 1. Cut 1mL (cm3) of potato and macerate it. 2. Prepare 50mL glass beaker with 10mL of H2O2 3. Place 1mL potato into glass beaker and record results 4. Repeat step 2 5. Place boiled 1mL of boiled potato into 50mL beaker of solution Data KMnO4(mL) | Time(seconds) |
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reactions. Equipments test tube rack (1) test tube holder (2) 100 mL beaker medium test tube (6) Materials cyclohexene toluene n-hexane conc. H2SO4 Br2/CCl4 or Br2/CH2Cl2 0.50 % KMnO4 10% NaOH 10% Na2CO3 unknowns hydrocarbons Discussion Hydrocarbons‚ compounds which contain only carbon and hydrogen‚ can be classified into several types‚ depending on their structure. Aliphatic hydrocarbons are divided into three classes:
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rich source of oxalate ion and its content in the fruit varies during different stages. Oxalate ion are extracted from the fruit by holding pulp with dilute H2SO4. The Oxalate ions are estimated volumetrically by titrating the solution with standard KMnO4 solution. OBJECTIVE OF PROJECT In this project‚ we will learn the test the presence of oxalate ions in the guava fruit and how its amount varies during different stages of ripening. THEORY Oxalate ions are extracted
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As the time periods increase‚ we should see a decline in the amount of KMnO4 needed to change the solution from white to brown. This means that less H2O2 is present. Catalase is especially abundant in liver cells of animals and other vertebrates‚ an organ that detoxifies many harmful substances‚ such as hydrogen peroxide
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drops of each alcohol. 6. To each tube‚ carefully add 2 mL of the KMnO4 solution. Shake the mixture carefully. 7. Allow the tubes to stand for 5 minutes‚ with occasional shaking. Observe and record any colour change to the solution in each tube‚ and the time it takes for any to change colour within the 5 minutes. 8. Dispose contents according to Mrs. McAdam’s instructions. Observations: (12 marks – C) Alcohol HCl added KMnO4 added
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Part I - Introduction Enzymes are proteins that act as catalysts to regulate metabolism by selectively speeding up chemical reactions in the cell without being consumed during the process. During the catalytic action‚ the enzyme binds to the substrate – the reactant enzyme acts on – and forms an enzyme-substrate complex to convert the substrate into the product. Each type of enzyme combines with its specific substrate‚ which is recognized by the shape. In the enzymatic reaction‚ the initial rate
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objective of this experiment is to distinguish the difference between various types of hydrocarbons by performing simple tests and reactions involving hydrocarbons. EQUIPMENT AND CHEMICALS Pentene Toluene Heptane Potassium permanganate (1% KMnO4) Aluminum chloride (anhydrous AlCl3) Chloroform (CHCl3) Ligroin Br2 in CCl4 (5%) Stopper pH paper Small test tubes and rack Graduated cylinder (10 ml) Evaporating dish DISCUSSION Organic chemistry is the study of compounds containing
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igniting 3-5 drops of the sample in a small evaporating dish. Baeyer’s test and Bromine test were used for tests for active unsaturation. Aromaticity of the compound was determined through nitration. Oxidation was tested by introducing 8 drops of 2% KMnO4 solution and 3 drops of 10% NaOH solution to 4 drops of the sample organic compound in a test tube and warming the mixture through water bath. All of the test compounds are liquid and colorless and observed to have a plastic like odor. Miscibility
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EXERCISE 11 SYNTHESIS OF ASPIRIN MARAVILLA‚ Ana Mikaela B Group 4 CHEM 40.1 1L Date performed: September 30‚ 2013 Date submitted: October 7‚ 2013 VI. RESULTS AND DISCUSSION Aspirin is prepared by the esterification of salicylic acid with acetic anhydride under acidic conditions. The phenol group in salicylic acid is replaced by a carboxyl group through electrophilic substitution. The mechanism for the reaction can be summarized
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