"Quantitative analysis of vitamin c contained in ribena" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 1 of 50 - About 500 Essays
  • Good Essays

    Title: Quantitative analysis of vitamin C contained in ribena Aim: to determine the amount of Vitamin C in a sample of ribena Materials: * Vitamin C (ascorbic acid‚ C6H8O6) * 4% potassium iodide (KI) * 1M acetic acid (CH3COOH) * N-bromosuccinimide (NBS‚ C4H4BrNO2) Apparatus: * Conical flask * 100 ml volumetric flask * Weighing bottle * Analytical weight balance * Spatula * Funnel Results: Item: | Mass in grams | Mass of weighing bottle with ascorbic

    Premium Ascorbic acid Vitamin Vitamin C

    • 650 Words
    • 3 Pages
    Good Essays
  • Good Essays

    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

    Premium Vitamin C Vitamin Fruit

    • 902 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Vitamin C

    • 2742 Words
    • 11 Pages

    E20-1 Experiment 20 Consumer Chemistry: Vitamin C in Fruit Juices The Task The goal of this experiment is to determine the concentration of vitamin C in a range of different fruit juices (fresh and preserved) using titration and to rank these sources of vitamin C. Skills At the end of the laboratory session you should be able to: * use a pipette correctly‚ * use a pipette filler safely‚ * manipulate a burette and carry out a quantitative titration properly‚ * weigh a sample

    Premium Vitamin C Titration Ascorbic acid

    • 2742 Words
    • 11 Pages
    Powerful Essays
  • Satisfactory Essays

    Vitamin C

    • 1193 Words
    • 5 Pages

    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+   

    Premium Iodine Titration Potassium

    • 1193 Words
    • 5 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Vitamin C

    • 744 Words
    • 3 Pages

    person needs a daily intake of Vitamin C to stay healthy; therefore‚ one should be aware of what fruits he/she should ingest daily or more days to obtain stronger stamina and the abundance of antioxidants in the body to reverse oxidation. Vitamin C or L-ascorbic acid is essential for normal growth of humans and it helps in the repair and reconstruction of body tissues lost over time. It is an antioxidant that blocks the damage caused by free radicals. People who take Vitamin C daily tend to build up a

    Premium Vitamin C

    • 744 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Vitamin C

    • 2015 Words
    • 9 Pages

    Estimating the Vitamin C Concentration in Fruit Juices: A Redox Titration Prelab Assignment – Please turn your answers in on GaView prior to lab 1. How will you prepare a .02% (m/v) NBS solution? Calculations should be in your notebook before arriving to lab. 2. Provide the structure of vitamin C in its reduced form (ascorbic acid)‚ its ionized form (ascorbate ion- this is at equilibrium with reduced form when dissolved)‚ and its oxidized form (dehydroascorbate). 3. Why do you

    Premium Vitamin C

    • 2015 Words
    • 9 Pages
    Good Essays
  • Good Essays

    vITAMIN c

    • 1420 Words
    • 7 Pages

    11/10/2014 experiment 1 Analysis of Commercial Vitamin C Tablets Objective To employ titration technique to determine the content of vitamin C in commercial tablets using volumetric analysis and compare it with the manufacturers’ specifications. Introduction Deficiency of essential antioxidant Vitamin C in human will lead to scurvy. In this experiment‚ the vitamin C content of commercial tablets is determined and then compared with the manufacturers’ specifications. Vitamin C‚ ascorbic acid C6H8O6

    Premium Iodine Titration Vitamin C

    • 1420 Words
    • 7 Pages
    Good Essays
  • Powerful Essays

    Vitamin C

    • 1434 Words
    • 6 Pages

    Title: Analysis of the differences of percentage of vitamin C (ascorbic acid ) between the fresh orange juice and artificial orange juice (Sunkist). Problem statement : Does have different types of fruit juice contain similar amount of vitamin c ? Objevtive: To analyse the concentration and percentage of different food sample by using titration method and state whether the percentage and concentration of vitamin C. Methodology: Theory : DCPIP can also be used as an indicator for Vitamin C. If

    Premium Vitamin C Vitamin Citrus

    • 1434 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    Vitamin C

    • 659 Words
    • 3 Pages

    Research Question: How the amount of vitamin C in fruit juices affects its freshness and till what extent is the information provided on the pack by manufacturers is reliable? Background Information: Hypothesis: -fresh juices have more vitamin C than long-life -juice that is ‘not from concentrate’ is best in terms of vitamin content -if heat destroys vitamin C then heat-treated long-life juices will have lower concentrations -if heat destroys vitamin C then boiled fruit juice will have

    Premium Vitamin C

    • 659 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Vitamin C

    • 1052 Words
    • 5 Pages

    Vitamin C –A Natural Antioxidant Concept: Vitamin C (ascorbic acid) is an antioxidant. The amount of vitamin C content in food can be found out by titrating with an oxidising agent‚ e.g. iodine. In the reaction‚ vitamin C is oxidised‚ while iodine is reduced to iodide ions. The endpoint is determined by the formation of blue-black starch-iodine complex when all vitamin C is oxidised and excess iodine is free to react with the starch solution added as indicator. Introduction Vitamin C is an

    Premium Vitamin C Iodine

    • 1052 Words
    • 5 Pages
    Good Essays
Previous
Page 1 2 3 4 5 6 7 8 9 50