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 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 important
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Week 3 DQ 1 FIN 100 "Economic Policy" Please respond to the following: From your knowledge of current events‚ discuss what you view as the most important economic policy of today. State your rationale for choosing this economic policy. From recent events‚ I feel as the most important economic policy is the new ObamaCare. Now‚ I am not going political with this at all but just stating that the government shutdown was all because they could not agree on a budget due to the Obama Care. I
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1.10b Review Questions 1. What reasons would you give if you were advising someone to study business? There are four compelling reasons for studying business described in this chapter. a. To start your own business b. For help in choosing a career c. To be a successful employee d. To become a better informed consumer and investor 2. What factors affect a person’s choice of career? Deciding what kind of career you want to devote your life
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and can clarify or verify almost anything. So nothing is never amiss. My best friend is highly authoritative at for N.A.S.A‚ but lately there has been affliction and agitation there. There are disputations about a name for a radiant new star that could hold a new specimen of parasites. The clamor has created a long ordeal of nearly 3 weeks and I yearn for it to end. I decided not to join the haggle and merely shirked away from it. I didn’t want to veto it‚ but I had no choice. If others had implored
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What Exactly Are We Drinking? Since the beginning of human existence‚ pollution has been a problem rapidly increasing with the growth of the world’s population. Throughout history‚ it has been a major source of diseases and plagues such as the bubonic plague. One serious threat of people’s health is the pollution of our underground watering systems. Many steps have been taken to help solve the pollution problem‚ a problem that still hasn’t been completely solved. Groundwater is located under
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OKLearn more Ad related to demonstrate ways to ensure that communication ... Communication skills?01243 820604 www.peaceworks.org.uk/Communication Contact Peaceworks now Get vital people-skills training Peaceworks - A List Of Our Mediation Services - Get The Training You Need Search Results demonstrate ways to check that communication has been understood www.askpedia.com › Questions › Education 8 Dec 2012 - asking approprite questions ... Active listening. Does their response make sense
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Associate Level Material Appendix B Ethical Theories Chart Complete the chart below using information from the weekly readings and additional research if necessary. Include APA formatted in-text citations when applicable and list all references at the bottom of the page. Ethical Theory Utilitarianism Deontological Virtue ethics Definition Is best known consequentialist theory. -The definition of Utilitarianism is ethical doctrine of greatest good-ethical doctrine
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After listening to your feedback on the paper that I turned in‚ as nice as you were at choosing your words regarding what my paper reflected. I had to sit with myself and really think about where those ideas and thoughts had come from that I wrote down cause when I listened to what you were saying‚ all I could think about was “that doesn’t sound like me”! It had to be though because no one else wrote that paper for me. After a lot of thought I went back quite a few years to a time when I was an active
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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 vitamin C‚ which is a good reducing
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