of ascorbic acid by iodine. The solubility of iodine is increased by complexation with iodide to form triiodide I2 (aq) + I- ºI3- Triiodide then oxidizes vitamin C to dehydroascorbic acid C6H8O6+ I3-+ H2O → C6H6O6+ 3I-+ 2H+(2) Vitamin C dehydroascorbic acid The endpoint is indicated by the reaction of iodine with starch suspension‚ which produces a blue-black product. As long as vitamin C is present‚ the triiodide is quickly converted to iodide ion‚ and no blue-black iodine-starch product is observed
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most enzyme concentration because it looked thicker than the others. Therefore I thought it will need more Iodine whilst orange juice labeled B & C will need less Iodine because they looked lighter. Variables Independent: the amount of Iodine that was added to the the different types of orange juice Dependent: The color of the orange juice changed to dark purple depending on how much iodine that was put into orange juices. Controlled: the temperature of the orange juices and the amount of orange
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reverse reaction the glucose part of glucose-1-phosphate is added as a new chain unit and phosphate is set free. This reversible enzymatic polymerization occurs with little change in free energy and therefor the reaction may choose to go either way. Iodine Test is a test for the presence of starch in which the sample turns blue-black in color when a few drops of potassium iodide solution are placed on the sample.
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emergence of antibiotic resistance‚ there has been a reappraisal of the use of povidone iodine especially in the management of contaminated and infected wounds (Khan 6). Povidine iodine contains polyvinylpyrrolidone iodine‚ which is a water soluble complex of elements iodine with a synthetic polymer (Khan 6). The most common ways to clean a wound involves swabbing and the use of either rubbing alcohol‚ iodine‚ salines‚ tap water or hydrogen peroxide (Khan
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Compare the Effectiveness of Alcohol in Hand Disinfect Products Introduction Hands are regarded as a major source of transmitting infection.It has been estimated that there are not less than 10000 organisms per cm2 of normal skin. This include both nonpathogenic resident flora as well as pathogenic transient flora(Carter et al.‚ 2000). On the other hand‚ health care-associated infections constitute one of the greatest challenges of modern medicine (Mathur‚ 2011). Pandemic and avian
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Chemicals SAMPLE NAME: Paracetamol Tablets ANALYSIS REQUIRED: Paracetamol CLAIM: Each tablet contains 500mg Paracetamol. THEORY: Paracetamol IUPAC Name: N-(4-hydroxyphenyl)ethanamide N-(4-hydroxyphenyl)acetamide Molecular Formula: C8H9NO2 Chemical Structure: Paracetamol INN or acetaminophen USAN is a widely used over-the-counter analgesic (pain reliever) and antipyretic (fever reducer). It is commonly used for the relief of headaches and other minor aches and pains and is a major ingredient in
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In the lab‚ three experiments were completed: the Iodine experiment‚ Benedict’s experiment and the Biuret experiment to test for starch and glycogen‚ reducing sugars and protein in the respective order. 12 solutions were given where 11 were known and the 12th was an unknown. The solutions that were supplied can be found in the results and observations section of this report. When completing such experiments‚ there are always controls used to make sure the procedure is followed and that no cross
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1. Double-Strength chloroform water B.P Product Manufacturing Record Product Details Product Code: Name: Double-Strength chloroform water B.P Batch NO: Date of Manufacture Quantity: Ingredients Ingredient Batch NO Formula For 1000 ml Amount Used 100ml POM Check 1. Chloroform 2. Purified water up to
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Introduction Identification and classification of bacteria is important to make easier manipulation on the bacteria for various purposes such as for medical‚ research‚ developmental‚ and biotechnicalfieldsThe cell wall is the basis for classification of bacteria according to the Gram stain. Accordingto the chemical make up of bacterial cell wall‚ a staining procedure‚ Gram stain‚ helps usclassify bacteria into two subgroups‚ The cell wall can stain either positive or negative‚depending on its chemistry
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the best methods is the iodine-thiosulfate titration procedure. Iodide ion‚ I-‚ is easily oxidized by almost any oxidizing agent (It has many electrons to lose!). In an acid solution‚ hypochlorite ions oxidize iodide ions to form iodine‚ I2. The iodine that forms is then titrated with a standard solution of sodium thiosulfate. The analysis takes place in a series of steps: 1.Acidified iodide ion is added to hypochlorite ion solution‚ and the iodide is oxidized to iodine. 2H+ (aq) + ClO-(aq) +
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