Iodine Essays

effect of concentration on reaction rates Introduction: - The iodine clock reaction involves mixing two clear solutions and producing a new clear solution. Then, after several seconds, the solution turns dark blue. This can be used to measure how fast a reaction occurs which is known as chemical kinetics. The time taken for the reaction mix to turn blue can be measured with a stopwatch. The reactions that form the basis for the iodine clock reaction are shown below. Equation 1: H2O2 + 3 I- + 2 H+

experiment was to find the rate law for the reaction of iodine with acetone using the initial rates method. The rates of each reaction was found by measuring the time elapsed between the addition of iodine to the solution and for the color of iodine to completely disappear in various trials. After the experiment was completed, the rates of iodine, the constant and the standard deviation were calculated and the rate law for the reaction of iodine was found to be: Rate=8.075 ±0.359 〖[A]〗^1 〖[HCl]〗^1

color will be at an equal concentration with the other dilutions performed. The hypothesis was wrong because of the difference in concentrations due to the different measurements within the dilutions done. The test for starch was to add a drop of iodine solution to the pipette in the spotting tile. A reducing sugar solutions is add inside a test tube with 3 drops to then add 3 drops of benedicts and plane in a water bath. In a non-reducing sugar 3cm cubed and 10 drops of hydrochloric acid is placed

gland utilizes iodide by using it in conjunction to produce Thyroxin. The thyroid gland is also the only organ in the body that uptakes and stores iodide in the body. One of the most common causes to a Goiter would include Iodine deficiency in the human body. A deficiency in iodine

also occur in other cases of hyperthyroidism. Therefore, other tests can be performed to finalize the diagnosis. Radioactive iodine uptake (RAIU) test and scan measure the amount of radioactive iodine taken up by the thyroid gland in a certain time period and also determine the distribution pattern of iodine in the thyroid gland. High uptake of iodine and distribution of iodine over the entire thyroid gland suggest Graves’ disease. TREATMENT OF GRAVES’ DISEASE 1) Non-Pharmacological

Murder and a Meal: An Organic Compounds Lab Problem: Based on the contents of the victim's stomach, where did he eat his final meal? Background Information: A macromolecule is a molecule that contains a large number of atoms, such as proteins, nucleic acids, carbohydrates or lipids. Macromolecules are formed by a process known as polymerization in which large compounds are built by the joining of smaller one together. The smaller units are known as monomers and monomers together form polymers

People are not truly good at heart “In spite of everything I still believe that people are really good at heart.” These words were spoken by Anne frank. She wrote these words in her diary in the attic of her father’s business. She was hiding from the Nazi’s, and hid among several other people in a confined area. Anne thought that everyone was truly good-hearted. She sadly died in a concentration camp about a year later.The truth is people are not good at heart. people are selfish, they are in

5 Home Remedies for Hair Loss in Women Every woman dreams of beautiful long tresses. They like to style their hair differently on various occasions. Hair is subjected to various harmful elements every day. Although women don’t lose hair as often as men do; but women do suffer from hair loss. Most men lose a lot of hair and become bald as they age. Women, however do not lose so many hair. In exceptional cases, many women also lose hair just like men. Women lose hair due to a number of reasons such

Forensic imaging, particularly MRI technology is crucial in determining the cause of death in forensic pathology. There are a few main techniques for forensic imaging, magnetic resonance imaging (MRI), post-mortem computed tomography (PMCT), and conventional radiography. The PMCT is generally used for gunshot wounds, detection of gas embolism, trauma cases, and changes in the skeletal system. Some advantages of this technique are that it is fast, easy to handle, good three-dimensional reconstruction

Musee des Beaux Arts; A Poem about Human Suffering Without suffering there could be no joy. In the Musee des Beaux Arts this appears to be the theme. In his poem W.H Auden puts a voice to the happenings of the painting "The Fall of Icarus". The narrator that Auden creates is one that delves in to the realm of human suffering, wasted lives, and the plights presented in the painting. Auden's narrative walks us through the events in the painting one by one highlighting whom is suffering and whom is

Results With Respect to Potassium Bromate(V) The table below shows my results when varying the concentration of potassium bromate(V):    Concentration of Potassium Bromate(V) (mol/dm-3) Time Take For the Mixture to Turn Colourless (seconds)    Trial 1 Trial 2 Trial 3 Trial 3 Trial 5 Average Reaction Rate (seconds-I)   0.01 31.9 ±0.01 32.2±0.01 31.7±0.01 31.8±0.01 32.0±0.01 31.92±0.05 0.0313   0.008 45.6±0.01 45.1±0.01 45±0.01.3 45.4±0.01 45.2±0

• Iodine Solution Weigh 7.7g of potassium iodide into a 50cm3 beaker. Use distilled water to help the iodide dissolve. Swirl for a few minutes until the iodide has completely dissolved. Using a funnel to help, pour the potassium iodide into a 500cm3 volumetric flask, make sure all traces of the solution is in the volumetric flask. Using distilled water would be a good method in order to rinse the beaker. Make the solution up to the 500cm3 mark with iodine (1% concentration) • Starch Indicator Solution

In 1993, the Chinese government launched the National Iodine Deficiency Disorders Elimination Program. China bears the heaviest burden of iodine deficiency in the world. In 1995, 20% of children aged 8 to 10 showed signs of goiter. Some 400 million people in China were estimated to be at risk of iodine deficiency disorders, constituting 40% of the global total. Today, the global importance of the health condition is a range including goiter (enlarged thyroid), stillbirths, stunted growth, thyroid

have lessened. That mineral is called iodine. Iodine is one of nature 's most stunning minerals. Tragically for our wellbeing, it is one that has been generally overlooked. However, it wasn 't constantly that way. Before the wide utilization of engineered medications, iodine was prescribed for everything: mending wounds and sickness, decimating microscopic organisms and infections, and even anticipating tumor. In any case, new medicines disregarded iodine, and we see the outcome – elevated rates

cosmeticaand food industries as well as in nanotechnology. (Ackman, 1967) The iodine value (or "iodine adsorption value" or "iodine number" or "iodine index") in chemistry is the mass of iodine in grams that is consumed by 100 grams of a chemical substance. Iodine numbers are used for determining the amount of unsaturation in fatty

Iodine-131 Iodine-131 is a radioisotope used in the treatment of thyroid cancer and is considered one of the most successful types of cancer treatments. Iodine is stored within the thyroid gland of the body. Humans are unable to make iodine so it must be absorbed through food. Iodine is necessary for the thyroid gland to be able to produce hormones. Iodine deficiency can also be very dangerous and lead to many different health problems. There are many benefits in using Iodine-131, mainly

Reaction Kinetics: The Iodine Clock Reaction Kinetics is the study of the rates of chemical reactions. A reaction rate describes the reaction’s speed, it is the rate at which the starting materials of a reaction (reactants) react and transform into the final produced materials (products). The greater the reaction rate, the less time required for reactants to be converted to products. Understanding the factors and conditions influencing reaction rates of is of fundamental importance in industrial

the course of the reaction. The rate of the reaction is a measure of its speed. The iodine clock reaction is a favorite demonstration in chemistry classes because it has an element of drama. Two clear solutions are mixed, producing a new clear solution. Then, after a period of several seconds, the solution turns dark blue. As mentioned, chemical kinetics measures how fast a reaction is occurring. To perform the iodine clock reaction in this science fair project, you will mix potassium iodide, hydrochloric

Manipulation of the Iodine Clock Reactions Haden G. Cavalli HL 1 Chemistry IA Introduction I am involved in a club at my local high school where we try new fun experiments in the classroom together in order to advance our understanding of science outside of the classroom. While I was looking for ideas, I found the iodine clock experiment which is where “A solution of hydrogen peroxide is mixed with one containing potassium iodide, starch and sodium thiosulfate” in order to create a mixture

We all end up lucky or unfortunate. We get lucky with the parents that love and care for us, and unfortunate with the ones who do not want us, or don’t care for us. For foster kids, they go through several houses with several different families. Sometimes these families are not the ideal family, and there is abuse and neglect in these homes. Foster kids never really get a break until they are adopted by a loving family. Sadly, they usually are more unfortunate than lucky. Treating foster kids poorly