vitamin C INTRODUCTION Vitamin C is a product that is usually found in many foods and produced by an abundance of chemical companies as dietary supplements. This vitamin is essential to the scurvy patients and used abundantly in cosmetic company due to its antioxidant properties. In the terms of its production‚ the fact that vitamin C has two totally and distinctly separate sides is still unknown to many people even doctors. The two sides consist of "L"-Ascorbic Acid‚ which is the (-) side‚ and
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Volumetric Analysis of Vitamin C by Titration The objective of this experiment is to use a redox reaction titration to accurately determine the amount of vitamin C in a sample of lemon juice‚ orange juice‚ or grapefruit juice. Chemistry of Vitamin C The chemical name for vitamin C is L-ascorbic acid. Its molecular formula is C6H8O6; its molar mass is 176.12 g/mole. Ascorbic acid is found throughout the plant and animal kingdoms‚ occurring in citrus fruits‚ hip berries (such as rose
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heat on vitamin C concentrated in lemon juice? Introduction: “Vitamins are complex organic substances that are needed in very small amounts for many of the essential processes carried out in the body.” 1It is estimated and supported scientifically that only a few mg are filling the daily recommendation‚ which is essential for a healthy living. As most of vitamins cannot be produced by our bodies‚ we need to obtain them from the food‚ supplements etc. Called Ascorbic acid‚ Vitamin
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Is High Vitamin C all it claims to be? These days‚ there is much concern on our consumption of food drink‚ we’re told we do not intake the required daily level of fruit and veg‚ many manufactures claim to provide excellent levels of nutrients‚ This experiment will be carried out to see whether the vitamin c levels claimed by manufacturers are actually present in the drinks‚ this will be done by experimenting various drinks using blue DCPIP solution. The quantity of vitamin C in food and drink
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Aim This experiment is to determine the vitamin C content in different brands of processed fruit juices. Hence‚ compare the vitamin C content in the experimental results with the manufacturer’s claim and to find out the best buy. Principle Vitamin C (ascorbic acid) is a reducing agent‚ the vitamin C content of processed fruit juices can be determined by oxidizing ascorbic acid‚ C6H8O6 to dehydro-L-ascorbic acid‚ C6H6O6. A reagent that is particularly good for the oxidation is an aqueous solution
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1. Citric Acid * Citric acid is a weak organic acid with the molecular formula C6H8O7‚ which means a molecule of the acid contains six carbon atoms‚ eight hydrogen atoms‚ and seven oxygen atoms. When it is dissolved in water‚ it partially ionizes to yield three H+ ions (hydrogen atoms which are missing their electron) and a C6H5O7(3-) ion (the 3- means that it has three extra electrons.) The resulting solution is called an "electrolyte." Chemical Reaction When two dissimilar metals are put
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Lab 2: Spectrophotometric Determination of Iron In Vitamin Tablets Objectives: - To determine the amount of iron in a generic vitamin tablet on a per tablet (in grams) basis. - To prepare standards using a pre-made iron solution to help determine the iron content in our generic vitamin tablets - Determine absorbances of our vitamin tablets and standards using the spectrophotometer Method: 1. Mass three vitamin tablets that contain iron 2. Place each vitamin in a 125-mL Erlenmeyer flask
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Laboratory exercise 3 : Quantitative analysis of vitamin C contained in a fruit juice Aim: To investigate the amount of vitamin C found in all kinds of fruit juice Introduction : Vitamin C is an antioxidant‚ along with vitamin E‚ beta-carotene‚ and many other plant-based nutrients. Antioxidants block some of the damage caused by free radicals‚ substances that damage DNA. The build-up of free radicals over time may contribute to the aging process and the development of health conditions such as
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potential of vitamin C to prevent and cure diseases such as cancer‚ flu and cold by using high amounts of vitamin C. First of all‚ Vitamin C‚ also known as ascorbic acid‚ is a molecule with complex characteristics despite its simple structure. It is an “elusive vitamin‚ very variable in concentration even in food groups (fruits and vegetables) that are recognised as good sources of the vitamin‚ very soluble in water and very sensitive to alkali‚ oxidation and heat” (Nobile & Woodhill‚ Vitamin C : the Mysterious
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Determination of An Unknown Amino Acid From Titration Abstract Experiment 11 used a titration curve to determine the identity of an unknown amino acid. The initial pH of the solution was 1.96‚ and the pKa’s found experimentally were 2.0‚ 4.0‚ and 9.85. The accepted pKa values were found to be 2.10‚ 4.07‚ and 9.47. The molecular weight was calculated to be 176.3 while the accepted value was found to be 183.5. The identity of the unknown amino acid was established to be glutamic acid‚
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