CHEMISTRY 221 LABORATORY�QUANTITATIVE ANALYSIS EXPERIMENT: DETERMINATION OF ASCORBIC ACID IN VITAMIN C TABLETS THEORY: Ascorbic acid‚ C6H8O6‚ MM = 176.13‚ can be oxidized to form dehydroascorbic acid by bromine via the following reaction: The bromine or iodine used in the titration is generated by adding an excess amount of KBr or KI to an acidified solution of the sample according to the following reaction: BrO3- + 5 Br- + 6 H+ 3 Br2 + 3 H2O IO3- + 5 I- + 6 H+
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Vitamin & Mineral Project Sundria Carroll February 22nd‚ 2011 Diet 1310 650 Brenda Speight‚ Instructor Vitamin K Vitamins are a group of organic substances essential in small quantities to normal metabolism‚ found in minute amounts in natural foods or sometimes produced synthetically. Vitamins help our bodies metabolize nutrients and grow cells. They come in two forms: those tat dissolve in water (vitamins B & C) and those that are absorbed and stored in fat (vitamins A‚ D‚ E
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Supplementary Vitamins taken in by MMSU Students A Term Paper Submitted to: Dr. RITHA B. REYES In Partial Fulfillment of the Requirement in English 2 _____ by ALFIE MONJE MARJORIE ANN P. TABIJE BS in Accountancy College of Business‚ Economics‚ and Accountancy Mariano Marcos State University March 2011 OUTLINE Thesis Statement: Students take in supplementary vitamins to improve their health. 1. Introduction 1.1 Vitamins 1.1.1 Definition of Vitamins 1.1.2 Importance
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essential fatty acids are flax‚ canola oil‚ fish and soy. Vitamins Vitamin E improves circulation to all parts of the body. The scalp needs proper circulation in order for hair follicles to be stimulated. Vitamin E can be found in avocados‚ nuts‚ seeds‚ olive oil‚ wheat germ‚ dried beans‚ soybeans‚ and dark green leafy vegetables. The B vitamins which include Biotin‚ Vitamin B6‚ Vitamin B12‚ and Pantothenic Acid prevent hair loss. These vitamins can easily be incorporated by adding eggs‚ meat‚ poultry
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17 & 18 Worksheets 10. Motion and Measurement of Distances Ø 19 & 20 Worksheets 11. Light‚ Shadows and Reflections Ø 21 & 22 Worksheets 12. Electricity and Circuits Ø 23 & 24 Worksheets 13. Fun with Magnets Ø 25 & 26 Worksheets 14. Water Ø 27 & 28 Worksheets 15. Air Around Us Ø 29 & 30 Worksheets 16. Garbage In‚ Garbage Out Ø 31 & 32 Worksheets (ii) 1 FOOD : WHERE DOES IT COME FROM WORKSHEET-1 SUMMATIVE ASSESSMENT Objective type questions Choose the correct
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VITAMIN B1 VERSION 1.0 What is it? Vitamin B1 is a water-soluble vitamin also referred to as thiamine. It is part of the B complex group and essential for normal metabolism‚ cardiovascular and nervous system health. Why you may need vitamin B1 Cataracts - a high dietary intake of thiamine is associated with a reduced risk of cataracts. Mouth ulcers – low blood levels have been found in people with recurrent mouth ulcers. Insect repellent – vitamin B1 is a popular natural insect repellent
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of orange juices‚ and we also used 0.1% of vitamin C solution. The aim of our experiment was to see how much DCPIP was needed to be added to make the orange juices turn back to the orange colour and the DCPIP to decolourise once the 0.1% of vitamin C was added. DCPIP is a blue dye in its non-reduced form; it becomes colourless when it gains electrons. Vitamin C is an anti – oxidant‚ this is found mainly in fresh fruit and vegetables. The main use of Vitamin C is that it neutralises free radicals‚ which
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Vitamins‚ Nutrients‚ and Minerals Vitamins‚ nutrients‚ and minerals are all important substances that are required to lead a happy‚ healthy life. Firstly‚ vitamins are an organic compound required by the body in small amounts of metabolism‚ to protect health‚ and for proper growth of children. Vitamins also assist in the formation of hormones‚ blood cells‚ nervous systems chemicals‚ and genetic material. There are 13 well-identified vitamins. Some examples of the 13 well-identified
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Vitamin K is a fat-soluble vitamin that is required for blood clotting and to prevent hemorrhaging. It also plays a role in bone formation and repair. Deficiencies can occur with inadequate dietary intake‚ malabsorption syndrome‚ chronic liver disease and in patients taking antibiotics. There are several forms of vitamin K‚ including K1‚ K2 and K3. K1 is the form found in plants such as spinach‚ broccoli‚ cabbage‚ and cauliflower. Vegetable oils such as olive and soybean also contain small
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Outline Introduction Vitamin E: is a fat soluble vitamin found in many foods and oils. It serves as an Antioxidant is a substance that may prevent damage to the body’s cells. The Importants of this vitamin is to help your body make red blood cells. I. Function: The antioxidant being the most important and best known. As enzymatic is a regulator for instance protein Kinase which plays a role in smooth muscle
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