Iodine

Analysis of the Chernobyl Meltdown On April 1986, Soviet's Union Chernobyl nuclear plant exploded letting out a massive amount of radiation that would debate of all Russian citizens for hundreds of years to come. At exactly 1:21 am. on April, 1986 inChernobyl, a city near the Pripiat River the No. 4 reactor exploded and released thirty to forty times the radiation of the Nagasaki and Hiroshima bombing. The exact causes of the explosion are not known , however scientists and

|(15 marks) |Module 2: Lesson 4 ASSIGNMENT | | | | | |This Module 2: Lesson 4 Assignment is worth 15 marks. The value of each assignment and each question is stated in the left margin. | |(15 marks) |Lesson 4 Assignment:

I will determine the concentration of the active ingredient in household bleach; Hypochlorite Ion (OCI-). I will do this using a titrimetric analysis in which the hypochlorite is treated with Iodide (I-) resulting in the production of (elemental) Iodine (I2). This is then titrated with Thiosulfate (S2032-) to a starch indicator endpoint. A blue to colourless colour change. Redox Titrations involve standard solutions of oxidants and reductants, the titrant. A change in oxidation state is effected

hypothyroidism and hyperthyroidism is exactly the same which includes laboratory test, thyroid scan, and radioactive iodine uptake test. The laboratory test for diagnosing both are thyroid-stimulating hormone (TSH) test and thyroid-stimulating immunoglobulin (TSI) test (University Michigan, N.D.). Treatment for both diseases is remarkably different. Hyperthyroidism treatment consists of radioactive iodine, antithyroid medication and sometimes a beta blocker to alleviate symptoms (Milas, 2014). There are two

Distribution Constant of Iodine Between Cyclohexane and Water Objective: The objective of the experiment was to determine the distribution coefficient (the equilibrium concentration ratio) of iodine between the immiscible solvents water and cyclohexane. This experiment was a study of equilibrium. The distribution coefficient will be derived from the data obtained by performing a chemical analysis for iodine in the water layer. Procedure: First, approximately 120 mL of aqueous iodine and 75 mL of sodium

The hormone, produced by this gland is an important hormone that the body needs to grow and properly develop. Iodine and Its Role in the Body To produce the hormone, the thyroid needs iodine. However, iodine is a trace element and the body cannot produce it on its own. Having a sufficient amount of iodine in the body is essential for the production of the thyroid hormone. Lack of iodine in the body can cause problems that specifically affect the thyroid gland. There are two leading problems experienced

Carbon's first known use was by the Egyptians and Sumerians in 3750 B.C. It was not until near the end of the eighteenth century was carbon an official element. It was "discovered" by A.L. Lavoisier in France. Carbon can be found in coal deposits, some stars, atmospheres of many planets, meteorites, fossilized remains, and in all living things. Carbon's name originated from the Greek word, "carbo", which means "charcoal" or "coal". The atomic number of carbon is six and the atomic mass is 12

clean beaker, then add 3 crystals of iodine 6. After 10 minutes, conduct the observation test V. Observations of all tests Standards Iodine Test Light Purple Iodide Test Yellowish

made and when the expiry date should be. In this experiment a solution of Vitamin C is added to a solution containing of known excess of iodine. At this point, the solution will turn blue-black in colour and this excess amount of iodine can then be titrated against standardized sodium thiosulphate. (^citation here) This technique is called back-titration. The Iodine is produced by the mixture of the following reagents: KIO3,KI,and H2SO4. KIO3+ 5KI+ 3H2SO4 3I2+ 3K2SO4+ 3H2O(1) Ascorbic acid+

After all of the thiosulfate is used up, the remaining iodine has nothing left to react with and so begins to become visible in the solution (a complex forms as the solution changes from clear to blue/black) This is due to the free iodine reacting with the starch solution that is added at the beginning of the experiment. The starch solution acts as an indicator, and so is added to enhance the colour of the iodine, making it easier to observe the changes in the colour of the solution