is a water-soluble organic compound that is easily oxidized and is therefore a good reducing agent. Iodine oxidizes vitamin C according to the following equation: CH2OH CH2OH H H C O O OH HO C 6H 8O 6 Vitamin C (Ascorbic acid) ϩ I2 → 2Hϩ ϩ 2IϪ ϩ O C O OH OH O O C 6H 6O 6 Oxidized form of vitamin C (Dehydroascorbic acid) Because aqueous iodine solutions are unstable and inconvenient to work with‚ you will titrate vitamin C samples in this lab
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Thyroid Disease? A person who has Thyroid disease has many challenges to defeat. Thyroid disease affects your thyroid gland. The thyroid gland helps produce hormones that controls your metabolism and growth. In addition your thyroid needs iodine‚ which is a chemical element that absorbs food and water‚ so your thyroid can do its job. There are many different types of thyroid disease such as Hyperthyroidism‚ Hypothyroidism‚ Hashimoto Thyroiditis ‚ and lastly Thyroiditis. Although there are
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isotonic. 2- What was the role of the indicators (Lugol’s and Benedict’s solutions) used in the cell model experiment? Explain your answer using results you obtained from the cell model experiment. Lugol’s solution is a solution of elemental iodine and potassium iodide in water‚ and it’s been used in this experiment as a reagent for starch detection. Benedict’s reagent has been used as a test for the presence of reducing sugar‚ which include lactose and maltose. 3- Explain the medical
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Autumn Hamman A&P II Unit 4 Disorders affecting the immune system Graves Disease When you think about diseases and disorders that can attack the immune system one of the first ones that might pop into your mind is Graves’ disease. You may not know what it is or how it effects the immune system but you have heard about it‚ after reading this paper you will have a better understanding of the disease and how it affects your body and your everyday life along with how to manage the disease.
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Certificate Certified to be the bonafide work done by Miss ____________ of class _____XII B____ in the________CHEMISTRY LAB____________ during the year 2013-2014 Date____________________________________ P.G.T. in CHEMISTRY LAB HOLY CROSS HIGHER SECONDARY SCHOOL‚ Pension bada‚ Raipur- 492001 Examination held in CHEMISTRY LAB at HOLY CROSS HIGHER SECONDARY SCHOOL‚ Pension bada‚ Raipur- 492001 Date __________________ Acknowledgement I
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PLANNING Investigating the Kinetics of the reaction between Iodide ions and Peroxodisulphate (VI) ions By the use of an Iodine clock reaction I hope to obtain the length of time taken for Iodine ions (in potassium iodide) to react fully with Peroxodisulphate ions (in potassium Peroxodisulphate). I will do three sets of experiments changing first the concentration of iodide ions‚ then the concentration of Peroxodisulphate ions and finally the temperature of the solution in which the reaction
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NAME; BOAKYE SAMUEL ANSAH COURSE; BSC.CHEMISTRY YEAR; ONE INDEX NUMBER; 1026613
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VITAMIN C Section: Pre-Laboratory Answer the following questions before coming to the laboratory. Give the reason for the following; Iodimetric titrations are usually performed in neutral or mildly alkaline (pH 8) to weakly acid solution. 2. Iodine solutions are prepared by dissolving I2 in a concentrated solution of potassium iodide. 3. Iodimetric determination of vitamin C is performed rapidly after preparing vitamin C solution 9-1 E XPERIMENT 9 IODIMETRIC TITRATION OF VITAMINE
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Fats and oils - 344 Iodine value of an edible oil INTRODUCTION Fats and oils known as triglycerides contain long chain hydrocarbons with carboxyl groups (COOH groups). These fatty acids are classified into the number of double bonds present in the fatty acid. When the carbon atoms in these chains are bounded to the maximum possible number of hydrogen atoms‚ the triglyceride is said to be saturated. When one or more double bonds exist between carbon atoms in the chain‚ less hydrogen exists
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reaction may also be known as the ‘Iodine Clock Reaction.’ The rate of the reaction will be measured by timing the reaction between Hydrogen Peroxide‚ Potassium iodide‚ and Sodium Thiosulphate. Sodium Thiosulphate is used as a delaying mechanism as the reaction between the two main reactants is too rapid to measure. The Sodium Thiosulphate will react with the Iodine [III] ions (the product) first and when the all the Sodium Thiosulphate has reacted‚ then the remaining Iodine ions will form a blue-black
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