This essay sample on Oxidation Of Alcohols By Potassium Permanganate Lab Report provides all necessary basic information on this matter, including the most common “for and against” arguments. Below are the introduction, body and conclusion parts of this essay.
The uses of alcohol in daily live are many things. One of example is producing of red wine or beer. The ethanol in alcoholic beverages is produced by fermentation of glucose. The glucose can be found in many fruits such as corn, rye, and the most usually used is grapes.
The process of fermentation of glucose will produce ethanol and carbon dioxide. Methanol also known as wood alcohol because at one time it was obtained by heating wood in the absence of oxygen, is highly toxic. Ingesting even very small amounts can cause blindness, and ingesting as little as an ounce can be fatal. Chemical Reagent:
Methanol Butane 10% Noah solution Glacial acetic acid Ethanol Spoilsport alcohol Dilute sulfuric acid MM sulfuric acid Apparatus: Test tubes Evaporating dish Dropper Water bath Lightning splinter Measuring cylinder Beaker Method: A.
Combustion of Alcohols 1. 1. 0 ml of methanol was obtained in the measuring cylinder. 2. The methanol was poured in the evaporating dish in the combustion chamber. 3. The evaporating dish which contains the methanol was ignited with lightning splinter. 4. Observed the color of flame produce and its luminosity. 5. The experiment was repeated from the step 1 until step 4. Observed the color of the flame and tabulated in table. B. Oxidation of Alcohols 1. By taking three test tubes so that is can be labeled to test tube A, B and C.
2. 3 ml of methanol and 12 ml of distilled water was mixed and it was divided to each three test tubes. 3. Another test tube D was taken so that the it can be filled with 5 ml of distilled water. 4. The test tube A was taken which contain a mixture of distilled water and methanol and dropped it about 10% of Noah. 5. Another test tubes was taken and dropped with 1 drop of sulfuric acids which in test tube B. 6.
By taken test D it was drop with of potassium permanganate solution to each of the first tubes. 7. The test tube D was taken as the reference to the other test tube which is time was taken for the reactions occur between them. 8. The time taken was stopped when the purple color of potassium permanganate is being disappeared 9. Record the time taken from each of the test TU bees. C. STERILIZATION REACTION 1. A 3 ml of ethanol was put in the test tubes. 2. 0. 5 ml of acetic acid was added and it continued which dropped with 10 drop of 3 M of sulfuric acid to the test tube in the fume chamber 3.
The test tube was shaken before the test tubes was placing in the boiling water bath in 3 minutes. 4. After the boiled process, it was continue to whiff the vapor released from the test tube. 5. Record the smell produced. Result: A. Combustion of Alcohols: Types of alcohols I Color flame I Luminosity I Methanol I Less-blue color formed Less intensity I Ethanol I Wide-blue with little yellow color I High intensity of blue color Table 1: the result from the combustion of methanol and ethanol B. Oxidation with Potassium Permanganate: Time required for oxidation of methanol by Potassium Permanganate Solution,
Km : Tube A: Alkaline solution Tube B: Acid solution Tube C : Neutral solution Tube D : Water C. Sterilization Observation: pungent smell produced Question: 1 . Write and balance the equation for the complete combustion methanol? CHI + 302 CHIC + OH 2. Name the ester product formed in experiment C? Describe the odor? The ester produce is call ethanol. The produced is fruity smell. 3. Write the equation to illustrate formation of ester above from ethanol and acetic acid? Discussion: In this experiment, there are three types of test involving alcohols which are ambition, oxidation of alcohol and the sterilization reaction.
There are many reactions involving of alcohols which are elimination, substitutions, oxidation and sterilization and also combustion. For combustion reaction, this is the direct reaction which is from the reactant to the product. In experiment 1, there a two type of alcohol which are methanol and ethanol. The combustion of these alcohol are usually different in molecular structure, boiling point and their melting point. In theory, the higher the number of carbon in molecule, the higher the melting mint and boiling point of an alcohol as well as their energy needed.
The energy needed for this reaction is different because of their carbon contain in the molecule. When compared to the between the alcohols the methanol are much more smaller in number of molecule than the ethanol which is number of carbon is two. When these two alcohols are burn in air, it will react with oxygen which is can be form in the equation: CHI(l) + 302(g) CHIC(g) + OH(l) From the equation, two mol of methanol is required when react with three mol of oxygen gas which will produce two mol of carbon dioxide and four mol of water.
When they undergoes reaction of oxygen the methanol will produce a less color of blue flame and less intensity of the flame produce. While, when the ethanol was burn in oxygen it will produce wide-blue with little yellow colors of flame and the luminosity produce are high intensity of blue color. This different between this combustion because the number of carbon contain in alcohols which affect the need of heat required to break the bond between the molecules. The oxidation of alcohols which are made by divided into three test tubes. The first one was mixture between methanol with 1 drop of 10% Noah solution.
While for the second test tube was mixture between methanol with dilute sulfuric acid. The fourth test tube was act as reference tube. For the first tube, the reaction between methanol with sodium hydroxide was an alkaline solution. Actually, the alcohols are normally only very weakly acidic so they will not react with bases such as Noah. That’s why the time for methanol oxidized in Noah solution was taking more than 30 minutes and the potassium permanganate solution does not decolonize. For test tube 2, the methanol was mixed with sulfuric acid. The methanol that as used in this experiment was a primary alcohol.
The oxidation for primary alcohol with Crap/ HOSTS will produced carboxylic acid. The potassium permanganate solution will become yellowish. The time taken to become yellowish approximately around 8. 29 seconds. The potassium permanganate solution is an inorganic chemical compound with the formula Km. It is a salt consisting of K+ and Mann- ions and most suitable for oxidation agent. The neutral methanol also become colorless in about 5. 37 seconds. For the reaction 3, the reactions are between the ethanol and acetic acid. This reaction are the sterilization reaction which is involve an acid and alcohols.
The sterilization reaction of sterilization is reversible and proceeds slowly but the rate of sterilization is increased by the presence of 3 drop of sulfuric acid as the catalyst in the reaction. Concentrated of sulfuric acid removed the water produced and help to push the equilibrium towards the product side of the equation. Excess alcohol will also force the equilibrium to the right. The first step involve the propagation of the carbonyl oxygen, followed by the necrophilia attack of the alcohol, finished off with the loss of the proton.