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

My Educational Goals and Philosophy Statement Essay

My Education Philosophy Developing a personal education philosophy is a process that may never end, but I believe that I am in the midst of creating one based on my own experiences and the lessons I am receiving in college. After examining the various education philosophies outlined in the â€Å"Teachers, Schools Society† textbook by Myra Pollack Sadker and David Miller Sadker, I have decided that my present philosophy is an eclectic combination of Essentialism and Progressivism. This approach covers my beliefs and the way I hope to interact with students. I believe, like the essentialists, that is important to throughly cover the basics of English, writing, math, and science. Students cannot be†¦show more content†¦I believe teachers should find ways to make their lessons interesting activities instead of drudgery. This will take more effort, but it will be worth the trouble if the students gain more from their engaged time. When the project-based approach is applied to a group, students could help one another and, as a result, learn from one another. Students who are not having trouble with their English lessons could help students who are having to make more of an effort. They would also experience the benefits of team work and sharing ideas. Today’s employers want people who know how to communicate effectively and work in a team, so I feel my eclectic philosophy of essentialism and progressivism would help students learn skills that would be valuable later in their lives. A stimulating, progressive approach to English would help the students gain essential communications skills. This essentialism-progressivism approach is the best way to take advantage of the experience I gained while working as a journalist. During my 15 years at the Bluefield Daily Telegraph, I learned that few people know how to write effectively. I often had to decipher incoherent letters composed by otherwise intelligent people. Even more shocking examples of poor writing entered the email posted at my previous address. One time a boy who was interested in tarantulas sent me a long, rambling letter that wasShow MoreRelated My Educational Goals and Philosophy Statement Essay867 Words   |  4 PagesMy Educational Goals and Philosophy Statement I believe that each child is a unique individual who needs a secure, caring, and stimulating atmosphere in which to grow and mature emotionally, intellectually, physically, socially, and academically. It is my desire as a future educator to help students meet their fullest potential by providing an environment that is safe, supports risk-taking, and invites a sharing of ideas. There are two elements that I believe are essential to establishingRead MoreEssay on My Educational Goals and Philosophy Statement1439 Words   |  6 PagesMy Educational Goals and Philosophy Statement The most important function of education at any level is to develop the personality of the individual and the significance of his life to himself and to others -Grayson Kirk. The teaching philosophy of progressivism focuses on developing the whole child. This philosophy not only teaches the core subject material, but it also allows the teacher to help develop the person the child is going to be. John Dewey, founderRead More My Educational Goals and Philosophy Statement Essays1035 Words   |  5 PagesMy Eclectic Educational Philosophy Thinking back on the years of high school, I remember having wonderful experiences both inside the classroom and out. I had influential teachers and the drive to succeed in order to obtain a higher education. I realize that not all students have that drive to continue their education, but as an aspiring educator I wish to seek and find that drive in each of my students. The famous philosopher and educator, John Dewey, once said, The aim of educationRead More My Educational Goals and Philosophy Statement Essay721 Words   |  3 PagesMy Education Philosophy I’ve always believed very strongly in hard work, perseverance, strong moral character. These traits to me are what exemplifies a superior teacher that has the privilege to touch many lives and change the world we live in. Hardwork is something that isn’t artificial, or can’t be bought. It’s a very special characteristic that sets people apart in the respect that it shows who want’s to be successful and make a difference and who doesn’t. InRead MoreMy Personal Philosophy Of Education1476 Words   |  6 PagesPersonal Philosophy of Education Submitted by: Wessam Elamawy . Personal Philosophy of Education Introduction: From the very beginning of my life I recognized the importance of higher education. I am 34 years old. I am Egyptian. I was born in a highly educated family . My father earned a Ph.D. in chemistry. My uncle earned a Ph.D. in Engineering . My aunt is a doctor. My grandparents were highly educated and they were great leaders in the educational field. This shaped my personalityRead MoreEssay about Personal Educational Philosophy1069 Words   |  5 PagesAbstract This paper is my personal educational philosophy statement. It represents my ideas and values about teaching and learning; it reveals my personal teaching beliefs and their relation to the five major established educational philosophies; it shows my role and responsibilities in educational process. I place great significance on personal style of instruction and its influence on curriculum implementation. The paper also highlights my career aspiration and orientation. Read MoreMy Philosophy Of Professional Practice1416 Words   |  6 PagesMy Philosophy of â€Å"Professional Practice† statement My philosophy of professional practice statement is to give the maximum in work not only for the students but also for those that surround me. My philosophy is very simple to respect all people to respect me.Strive to help students think critically, facilitate learning with customized modifications, and help students use problem-solving strategies. My personal core of belief is always practiced active listening to assist the students better. ItRead MoreEssay on Mission and Vision Statement897 Words   |  4 Pages Mission and Vision Statement Mission Statement: As an educator I will provide for students the opportunity to make a positive difference in their lives to help them accomplish unexpected goals. I will enhance learning to support my students in achieving their highest potential by integrating technology into the curriculum. I will integrate conceptual technology learning techniques that will implement concrete knowledge of technology that will emphasize mastery of understanding. Through committedRead More My Philosophy Statement Essay1177 Words   |  5 PagesMy Philosophy Statement In this philosophy statement you will not be reading the statement of a great philosophical mind, but of an education student who loves to work with kids and who tries to have the students best interest in mind. comparing and contrasting my views with the views of many of the philosophical giants throughout history I will discuss five topics: 1.) the nature of students, 2.) the nature of knowledge, 3.) the purpose of public education, 4.) the method of education,Read MoreEducational Philosophies650 Words   |  3 PagesEducational Philosophies Elizabeth Howell Liberty University What is the philosophy of education? It is a set of ideas and beliefs that guides teachers’ actions and provides a framework for thinking about educational issues. (Kauchak and Eggen, 197) Teachers use philosophy everyday in their classrooms. From the time the first student enters their room until the last student walks out, philosophy is affecting the way the teacher runs his/her classroom and how they interact with their students

Develop a business plan including financial planning Free Essays

Develop a business plan including financial planning and marketing BY Ere-NY I am a fully qualified Offset Registered Children. Challenging takes place on the ground floor of my house In big and spacious room fully equipped and caters for all age groups from 0-8 years. Professional Qualifications and Experience I have previous experience in working full time as a children assistant, therefore I am updated with all the E. We will write a custom essay sample on Develop a business plan including financial planning or any similar topic only for you Order Now Y. F. S. Stages of development and will give you a daily profile of your child and reviews with a more detailed profile of your child’s work. I am articulacy interested in role-play for children, mime and story telling. I also use a lot of nursery rhymes, singing and poems with children. Languages I am Italian, which I can teach if parents are interested using flash cards, games, and music. I also have a basic understanding of Spanish and French however my assistants are also bal-lingual in Spanish and Turkish. Food and Allergies All possible precautions will be taken to avoid the most common allergies such as nuts, eggs and berries. Wheat allergy can be taken Into account and discussed. All the food I give Is vegetarian and organic. This Includes milk (formulas are usually supplied by the parent). Food is given every hour to an hour and a half throughout the day. Alternatively you can bring your own which will be given at similar timings. A menu for the week is given at the beginning of the week. All meals include fruit or yogurt or fruit puree and fresh fruit is given at least twice a day and up to four or five kinds of fruit often. This is naturally seasonal. Assistants I have two fully Offset registered assistants, both working 20 hours per week on a Rota basis also depending on how many children we have to care at the same time ND they work from 8. 0 to 5. 00 and occasionally longer and one as standby to work odd hours/half or full days If the other one Is Ill or absent for any reason. Activities Each child under my care Is precious and unique. Deferent activities are laid out to slut different needs and reading. Quiet but mentally stimulating activities are encouraged such as puzzles, drawing and other art and craft simple activities such as fuzzy-felt or construction toys such as leg/duple/sticklebacks. Play: Children have a structured day with age related toys, which are regularly washed and checked Children over the age of two will take a part in cooking – Artwork for children of all ages – Sure Start Children’s Centre – Libraries -Outings to parks A list of what toys are displayed for the children Is made on a weekly basis. This then helps parents Identify what toys children are playing with, dally. Children can also access toys from shelves bookcases, and drawers that are mostly at their level even for children of nine or ten months. Equipment Is changed regularly to slut the needs of the children. School runs are also considered, if you would like to know more My house has a lovely big garden with all the outdoor toys and activities. The children, especially in the spring are stimulated to do outdoor activities such us planting strawberry and see it grow. Children’s Centre is usually visited on a regular basis. Other days of the week parks, Wood Green library, toy libraries and places of interest are visited which include cultural and festive places such as a visit to see Father Christmas. Outings lists are made for the whole week. I do not charge for outings that are less than E. This means that within this time an eight-hour day is EYE. O. However I do work longer than those hours if required from 6. 30 am to 7. Pm. Longer hours than this may be considered. All rates other than the standard times will be extra and can be discussed. I also work in the evenings and rates will vary accordingly. Babysitting pm onwards which can be discussed I. E. Your house or my house. Overnight care is registered by Offset as can be seen my registration certificate. Reviews and parties. I have regular reviews and parties for parents. Sometimes reviews are Joint as some things may apply to several parents. Parties are a way of both parents and children socializing and children seeing how we all interact with each other. Location Wood Green, Perth Road NON, about 3 min by bus from Wood Green underground. Parking is freer before am and after pm however if you require to stay long time for a review I can provide you with visitors’ parking permit. Comprehensive list of rates for other timings is available, please ask if interested Please book a time to come and visit any weekday, preferably not between 12 and 2. 00 as children are having their lunch and getting ready to sleep. Late afternoon after pm up to pm is preferable. How to cite Develop a business plan including financial planning, Papers

Gambling Addiction free essay sample

While it may appear that addictions are solely pleasure-seeking behaviors, the roots of addiction can also be traced to a wish to suppress or avoid some kind of emotional pain. In the broadest sense, addictive or pathological gambling is gambling behavior which causes disruptions in any major area of life: psychological, physical, social or vocational. Addictive gambling is sometimes referred to as the hidden illness, because there are no visible physical symptoms. The American Psychological Association classifies compulsive gambling as a mental health disorder of impulse control. It is a chronic and progressive disease that is both diagnosable and treatable. About 2 to 4 percent of Americans have an active gambling problem. Compulsive gambling can be categorized into two types: action gambling and escape gambling. * In action gambling, the gambler is addicted to the thrill of risk-taking as his or her substance of choice, much in the same way that a cocaine addict is hooked on cocaine. We will write a custom essay sample on Gambling Addiction or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The action itself becomes the drug. Action gamblers typically engage in games with other players, since part of the adrenaline rush is in the appearance or identity as a winner. * Escape gambling occurs when the gambler seeks to blot out some discomforting feelings or emotional life crisis. The action of gambling is secondary to the numbing effect of the activity. Escape gamblers prefer more singular outlets such as slot machines, where they can avoid human contact. Men tend more towards action gambling, and women tend to become escape gamblers. It is significant to note that teens are about three times more likely to become pathological gamblers than adults. This is the reverse of the case in most addictions, where the problem among adults is statistically more prevalent than among children and teens. For this reason, early education about the dangers of gambling addiction and information on how to get help for the problem is vital for preventing the disease. Problem and pathological gamblers across age groups also use tobacco, alcohol, marijuana, cocaine, and other drugs more often than do other groups. What are the signs and symptoms of gambling addiction? Sadly, children are negatively affected by gambling addiction in several ways. Physical and emotional abandonment is a very real phenomenon. ‘Casino kids’ are left in cars or on the periphery of the gambling action while their parents gamble, or may spend hours with babysitters, thus missing the nurturing they need. Children of pathological gamblers are typically abused verbally, mentally and physically by the gambler, and often even more so by the co-dependent spouse. Finally, these children are much more likely to develop gambling addiction than their peers.