CHEM 3281 Experiment Seven Determination Of The Composition Of A Multi-Component Mixture By Spectrophotometric Analysis Objectives: 1.Solid sample handling 2.The composition of a three-component mixture will be assayed by dissolution of the soluble components in water and measurement of their individual concentrations by visible spectrophotometry. Text Reference: Handbook of Instrumental Techniques for Analytical Chemistry‚ Frank Settle‚ editor. Prentice Hall‚ ‚ Upper Saddle River‚ NJ 1997‚ Ch 25
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Determination of Iron by Reaction with Permanganate-A Redox Titration Purpose: The purpose of this experiment was to find the percentage of iron in an unknown iron oxide sample which could be determined through titration with a standard solution of potassium permanganate. Success in this analysis requires careful preparation and attention to detail. Performing this experiment also provides practice at titrations. The overall reaction is: 8H+(aq) + MnO4-(aq) + 5e- Mn2+(aq) + 4H2O Theory:
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Aim: To find out the mass of Iron (II) sulphate each ‘Iron tablet’ contains Background Knowledge: ‘Iron tablets’ are prescribed to patients suffering from anaemia. They contain 200mg (0.200g) of iron (II) sulphate FeSO4 We are going to analyse iron tablets to find out how much Iron (II) sulphate they contain. The procedure we will use is a REDOX reaction‚ by oxidising the Fe2+ contained in the Iron (II) sulphate to Fe3+. We will use potassium manganite (VII) as the oxidising agent. The active part
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Should Tablets Replace Textbooks? Today‚ there is a debate on whether schools should stay with classic textbooks‚ or take a more advanced approach and use tablets as a replacement for all textbooks. Many schools like Carmel are going about having every student own a tablet for class purposes. This is something that Warren Township High School should really consider. Every student at Warren‚ for many reasons‚ should own a tablet. There is no better substitute for textbooks than a tablet. Studies
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Vitamins In the early 20th century the discovery of vitamins began. Today there is a chance that there are some vitamins that are still undiscovered. The definition of vitamin is: one of several substances necessary for animal nutrition‚ and occurring in minute quantities in natural foods; numerous types have been distinguished‚ and designated by the letters of the alphabet. Each and every living animal needs vitamins to grow and be healthy. Since the human body can t produce
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Rick & Rosalinda Puetter—Personal vitamin/supplement use and practice‚ 6 February 2000. Vitamins‚ Supplements & Their Uses I. Introduction Our interest in vitamins‚ dietary supplements‚ and nutritional biochemistry began in 1994. I in particular was a severe skeptic about supplements in general‚ and thought everything one’s body needed could be supplied from a “healthy diet”. This‚ of course‚ is true to some degree. Healthy diets allow one to live a long and pleasant life. This does not mean
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Vitamins Vitamins are vital organic nutrients essential to over all health and are needed for cells and fluids in the body. They are found in all the foods that we eat‚ and must be consumed in small quantities since our bodies cannot make them. They are also available in dietary supplements‚ but those are only suggested if necessary‚ like if the body is not getting enough vitamins from food. Even though vitamins do not supply energy as carbohydrates‚ fats and proteins do‚ they are vital because
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experiment was to determine the percentage purity of the iron(II) salt in an unknown sample. We performed titrations using Potassium permanganate which is a strong oxidizing agent‚ with unknown sample dissolved in deionized water. The result of the experiment was a 99.5% purity for the anhydrous iron (II) ammonium sulfate. Introduction: In this experiment‚ oxidation/reduction (or redox) will be used in the titration analysis of an iron compound. We will use potassium permanganate‚ KMnO4‚ as
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Mariam Haider Micronutrients Vitamins Written Task Design Brief; Foods are not ‘pure’ substances. Although referred to as protein foods‚ or carbohydrate foods‚ this only recognized the food to be high in a particular nutrient. In fact‚ foods are mixtures of different nutrients and other chemical substances such as toxins‚ pigments and additives. Protein‚ carbohydrates and fat are regarded as macronutrients due to the size of their molecules. These nutrients are needed in large quantities
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Vitamins Vitamin is defined as any of a group of organic substances essential in small quantities to normal metabolism‚ found in minute amounts in natural foodstuffs or sometimes produced synthetically (Dictionary.com‚ 2012). We need vitamins and minerals for our bodies to function properly. By eating a variety of foods‚ we can often supply our bodies with the necessary vitamins it needs‚ but in some cases it is necessary to take a vitamin supplement as well. By eating a good diet in conjunction
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