Essay on Synthesis and Chemistry of K2S2O8 - 2122 Words

SYNTHESIS AND CHEMISTRY OF K2S2O8 ABSTRACT In this experiment, a sample of K2S2O8 was prepared by the electrolysis of an aqueous solution of H2SO4 and K2SO4. The peroxodisulfate anion, S2O82-, was also observed for its ability to serve as a counterion for precipitation by preparing a copper (II) complex by reacting hydrated copper (II) sulfate with ammonium peroxodisulfate in the presence of pyridine. This same ability, coupled with its strong oxidizing ability allowed for stabilization of the unusual oxidation state of 2+ for silver which was observed by preparing an analogous silver (II) complex by reacting silver (I) nitrate with ammonium peroxodisulfate in the presence of pyridine. IR spectra for the three products were†¦show more content†¦Thus, it is an important and popular tool for structural elucidation and compound identification. EXPERIMENTAL METHOD A. Preparation of potassium peroxodisulfate A potential set-up was prepared wherein the 25 x 150 mm test tube was filled with K2SO4 (30mL, 0.15 mol) saturated at 0  °C in 5M H2SO4. The test tube was immersed in ice, power supply was adjusted to give the solution a current of ~3.0 amps. Current was read and recorded as accurately a possible, as well as the time over which electrolysis was carried out. K2S2O8 precipitated over a period of 45-50 minutes during which the temperature was maintained close to 0  °C (~8  °C or lower) during electrolysis. Crystals were collected in a Buchner funnel, washed with alcohol, then ether, then transferred into a sample tube for storage. B. Reactions of Peroxodisulfate Ion A saturated solution of K2S2O8 in water was prepared and the following reactions were carried out. The results were compared with similar reactions using hydrogen peroxide. 1) Acidified KI solution, warming gently 2) Silver nitrate solution 3) MnSO4 solution in 2M H2SO4, containing 1 drop of AgNO3 solution 4) Titanium (IV) sulphate solution C. Preparation of Tetrapyridinecopper(II) Peroxodisulfate Solutions of CuSO4ï‚Ÿ5H2O (0.506 g in 10mL water, 3.17E-3 mol) and ammonium peroxodisulfate (1.030 g in 10mL water, 4.51E-3 mol) were prepared and mixedShow MoreRelatedThe Doping Of Semiconductor By Rare Earth Metal Nanoparticle1754 Words   |  8 Pagesensures high chemical homogeneity because of the aqueous solution mixture of initial reagents that favors the production of desired phases. Among the soft-chemistry techniques, the gel-combustion method needss comparatively shorter reaction times and lower temperatures. Recently gel combustion method has been utilized in organic and inorganic synthesis [36]. The benefits of gel-combustion methods includes fine chemical homogeneity, high purity fine particles size distribution and easy doping etc. There

The Impact Of Nike And Globalization - 765 Words

Introduction Nike Inc is an athletic footwear company founded in the United States, they also has athletic clothing and sporting goods. Nike dominates the sporting industry along side its famous competitors; Adidas, Fila, Converse and Reebok (Locke, 2002). Regardless of its competitors and the controversies‘ that rose from their success, Nike is currently the largest and most important athletic wear company in the world. They dominate the market and have a global presence all over the world. Significantly because they took advantage of globalization and outsourcing opportunities, it has allowed them to take over the market share for athletic footwear. But there was negative results from becoming a multinational corporation. We will be†¦show more content†¦Pakistan After the Indonesia incident, Nike faced child labor accusations in Pakistan. Life’s magazine did an article on a 12 year old boy that was stitching a soccer ball for Nike (Locke, 2002). Their criticism came from consumers, trade unions and NGOs. In response to this incident, Nike decided to associate themselves with UNICEF and ILO, these organizations implemented the elimination of child labor and allowed for nike to rebuild their image to become positive again (Locke, 2002). Contractors were instructed to pay the child’s wages for the rest of their lives until they reach the legal working age in their country. Nikes response was ensuring new child labor policies and I agree that it is a responsible idea. Vietnam Lastly, Nike was accused of having health and safety regulations in their factories, it was found that toluene concentrations were high in factories in Vietnam. This chemical being released at levels higher then 6 cause damage to the central nervous system, the liver and kidneys. Protective equipment was also not provided to workers, therefore putting them in danger, creating poor working conditions (Locke, 2002). Work hours were also unfair. Nike first responded to these accusations by denying it was true but afterwards they decided to incorporate a new Code of Contact for their suppliers in order to ensure that the required environmental and health standards were met. They even adopted the OSHA standards for indoor air qualityShow MoreRelatedA Case Of Globalization ; Nike. University Of The People1308 Words   |  6 Pages A Case Of Globalization; Nike University Of The People â€Æ' Two decades ago advances in technology developed innovated the way individuals and business interact with each other. Innovations made possible to increase productivity, it made possible for companies and individuals to multitask, for the world to be united, and in general for us to be us. We can summarize this, as the most innovative time of globalization. Globalization comes because advances in technology, desire of individualsRead MoreThe Case Of Nike : Review Analysis1334 Words   |  6 Pages Case of Nike: Review Analysis 3 Over the decades, globalization, where economic integration across border allow businesses to expand beyond their domestic boundaries. (Malamud, V. Rotenberg, Y. (2010)); has become a phenomenon that is seen across the globe. Businesses large and both small are able to compete, produce, and sell their products without limits to either demographic or geographic factors. This allows company s to enlarge their base, their workforce, their consumers, and thereforeRead MoreNike Positive And Negative Effects Of Globalization1367 Words   |  6 PagesThe Promises and Perils of the Globalization of Nike Globalization involves global interaction and cooperation between individuals, corporations, countries and their governments. As demand for products grows and the technology it takes to improve the process by which products can be manufactured more cheaply grows, globalization grows as well. It is supported by advancements in technology. These changes can have both short-term and lasting effects on issues surrounding economics, politics, the environmentRead MoreDiscussion Questions for Globalization Is Good Followed by Discussion Questions on Global Village or Pillage1154 Words   |  5 PagesDiscussion Questions for Globalization is good followed by discussion questions on Global Village or Pillage Taiwan: Discussion questions 1.How has ‘land reform’ contributed to the rapid industrialization of Taiwan? Land reform contributed greatly to industrialization of Taiwan because the people were able to own land due to their governments property ownership program. 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Globalization is the progressive integration between national economies and the breaking down of barriers between trade and financial flows around the world, which will eventually lead to the emergence of a single world market. Globalization has affected many different nations in different ways, depending on their degree of development and extent to which they are open to the flows of the world economy. China, whichRead MoreThe Expansion Strategy Of Nike1287 Words   |  6 PagesGlobalization has helped many giant U.S. product manufacturers, such as Coca Cola and McDonalds, become globally successful household names. However, so much power and popularity can come at price; any public relation (PR) nightmare can blow up at record speed thanks to the growing availability and popularity of the Internet, which can result in a negative reputation, followed by a catastrophic decrease in sales. 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I have always wanted to know the practices that Nike used in order to make their bu siness last this long and how have they been so successful. I will explain to you how globalization and technology changes have helped or hurt the company and the major role that it has played. I also plan to construct a plan to see how my corporation couldRead MoreStrategic Management And Strategic Competitiveness1190 Words   |  5 Pagesthat I have chosen to write about is Nike. I have always wanted to know the practices that Nike used to make their business last this long and how have they been so successful. I will explain to you how globalization and technology changes have helped or hurt the company and the major role that it has played. I also plan to construct a plan to see how my corporation could earn above-average returns and increase their gaining potential. I will explain Nike s vision and mission statement and show

Coming Together with Music free essay sample

A wrinkled old woman waves hello as she heads indoors to pick up her usual Sunday lunch at the food court. She weaves her way through the crowd around us, navigating past an Israeli family, a few Spanish-speaking men, and a group of Red Sox bound Bostonians. Home to 18,000,000 tourists a year, the lively historical marketplace, Faneuil Hall, is not an easy location for her to pass through. The member of the band whose part is the least busy — either my mom, my sister, or I — waves hello, letting the musical harmonies wane from three parts to two, and back to three again after she picks up her bow and continues playing. Playing music as a part of the Performance Roster on the buzzing streets of Faneuil Hall Marketplace is not about a perfect performance. I’ve thought it started to rain, only to realize it was actually bird poop dropping onto my head. We will write a custom essay sample on Coming Together with Music or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page I’ve witnessed our whole stack of business cards fly away with a breeze. I’ve smiled so big while playing watching a little girl dance that I couldn’t possibly run a steady bow on the strings of my violin. These little moments, gems of live, outdoor performance, bring the focus of my music on joy, rather than flawlessness. My family band, Tatu Mianzi, got together years ago for a family wedding. Over the years, we’ve moved far beyond the classical genre. These days, in a typical set, we might bounce from a Brazilian Bossa Nova to Scottish Fiddle, from Hava Nagila to Eleanor Rigby. We focus on learning music from as many regions of the world as we can, reaching out to specialists to teach us their traditions. It doesn’t matter that our band – made up of two violins and a cello – learned to play tangos from an accordion player, or jazz from a saxophonist. Music is music. We take our eclectic shows all over the country and the world, performing more than 50 concerts a year. When we play in schools, I ask the kids, â€Å"Where do you want to travel today?† A girl in the front calls out a country, probably from her family heritage, and we play her a song from that region, watching her face light up as she listens to her culture come alive. I’ve played some songs in my repertoire well over 500 times, yet performing with my band never gets old. I’m no longer thinking about playing the right notes or bowings. Instead, I’m listening closely and responding to what my sister and mom are playing as we take turns trading off the melody, choosing a bass line, and improvising harmonies. I play from the heart, not the page. Back at Faneuil Hall, people with seemingly nothing in common – no common language, different skin colors, wide age gaps – enjoy each other as they listen to us play. They start to clap and dance together, and I dance too. In these moments, letting my emotions take over and seep through me, at the expense of a few lost notes, is okay. In fact, it’s encouraged. While playing in Tatu Mianzi is technically a job, and it’s great to make money, I gain so much more from my trio than the tangible. In a time when my country seems divided – politically, economically, and racially – our music is a catalyst, melding people together who would normally be at odds. Our music creates a community of people, if only for a few minutes at a time, that gets along. They stop to listen, opening themselves up to their emotional impulses and refreshing themselves for whatever lies ahead. I too am refreshed. Goodness can be so simple.