What Is a Buffer and How Does It Work

The use of buffers is an important concept in acid-base chemistry. Heres a look at what buffers are and how they function. What Is a Buffer? There are two key terms associated with buffers. A buffer is an aqueous solution that has a highly stable pH. A buffering agent is a weak acid or weak base that helps maintain the pH of an aqueous solution after adding another acid or base. If you add an acid or a base to a buffered solution, its pH will not change significantly. Similarly, adding water to a buffer or allowing water to evaporate will not change the pH of a buffer. How Do You Make a Buffer? A buffer is made by mixing a large volume of a weak acid or weak base together with its conjugate. A weak acid and its conjugate base can remain in solution without neutralizing each other. The same is true for a weak base and its conjugate acid. How Do Buffers Work? When hydrogen ions are added to a buffer, they will be neutralized by the base in the buffer. Hydroxide ions will be neutralized by the acid. These neutralization reactions will not have much effect on the overall pH of the buffer solution. When you select an acid for a buffer solution, choose an acid that has a pKa close to your desired pH. This will give your buffer nearly equivalent amounts of acid and conjugate base so it will be able to neutralize as much H and OH- as possible. Sources Atkins, Peter; Jones, Loretta (2005). Chemical Principles: The Quest for Insight (3rd ed.). New York: Freeman. ISBN 0-7167-5701-X.Harris, Daniel C. (2003). Quantitative Chemical Analysis (6th ed.). New York: Freeman. ISBN 0-7167-4464-3.

The Rational Way Of Life - 843 Words

The Rational Way of Life Epictetus’ Stoic Recommendation of Freedom Freedom is an arbitrary concept that has been and will always be limited. The notion of freedom is possible among equals, however, equality itself is universally different. Arendt, a political theorist, believes political freedom manifests through action, her reliance on the ability to act implies that humans can tangibly live freely. Epictetus on the other hand, believes that all humans can be internally free if they had a stoic mindset in their way of life. He believes that human beings are in complete control of their happiness and should only worry about what they can control instead of what they cannot. The revolutionary treasure is the original spirit of individual freedom that has been lost through the principles of public freedom and public happiness. Freedom as Epictetus defines is an internal condition that only we ourselves possess control over, his stoic recommendation offers a simple yet rational approach of living life freely. Public opinion suffocates the original spirit of the revolutionary treasure because public opinion provokes a common opposition, thus killing true personal opinions of American citizens. Arendt states that the Founding Fathers of America equated law based on public opinion with tyranny; in this sense, democracy was to them a new form of despotism. â€Å"Paradoxical as it may sound, it was in fact under the impact of the Revolution that the revolutionary spirit in AmericaShow MoreRelated Kants Humanity Formula Essay1646 Words   |  7 Pagesconfirmed by the dignity and worth of the rational agency of each person. Since human beings are the only rational beings capable of decision making and reasonable judgement, humanity must be valued. 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Subculture Electro House Raver Free Essays

The hallway is dark and all you hear are melodic beats getting steadily louder growing with your anticipation as you walk closer to the entrance. The hallway opens up to a huge warehouse stuffed with ravers. Strobe lights blind you at first but their inviting energy gets you in the mood. We will write a custom essay sample on Subculture: Electro House Raver or any similar topic only for you Order Now Up front is a DJ mixing continuous beats making the floor pulsate. All of your senses are heightened giving everything movement and energy. Electro House is more than just a genre of music. This genre has formed into a subculture because of its enormous following, lifestyle, and roots. The electro house music lifestyle grabs hold of mostly youth. However race, gender, and socioeconomic status is all ranges. A younger crowd is drawn to this genre because of the fun party scene involved and the care free attitude the genre evokes. The electro house genre became more than just music in the 2000’s. Popular DJ’s became the main draw for clubs. Typically this kind of party is called a rave. A rave describes the atmosphere which is dark, has strobe lights and sometimes accompanied by a projection of images to go along with the music. Ravers are the people who go to raves. This is the person who evokes the house music lifestyle. Typically a raver is young, dresses fashionably, and sometimes likes the drugs ecstasy, cocaine, and or MDMA. Raves can be known for their drug consumption but not all ravers are like this. An experienced raver usually brings or wears something that glows. If a raver brings glow sticks this allows an opportunity to dance with one in each hand, this is very popular while listening to electro house music. The fast paced music allows the ravers to dance rhythmically and can be compared to tribal like movements. In every day slang electro house is called electro. Jargon is also used to describe different kinds of electro house music. A bootleg is a remix made by a DJ who doesn’t have the official legal rights or permission to make the remix. These kinds of remixes are common and are done by every DJ. Mashups are similar and involve a producer taking elements from different tracks and putting them together to make a new one. White labels are twelve inch vinyls released for test pressing containing the bootleg tracks or remixes. Ravers also have a slew of jargon when talking about ecstasy. Mostly the terms E, X, or rolls are used and when on the drug most refer to it as â€Å"rollin†. To understand the subculture of electro house the history of house music needs to be established. House music in its first form was disco. The history of house music starts back in 1977 when â€Å"Saturday Night Fever† came out. â€Å"Saturday Night Fever† was an instant hit and a surge of young americans went to disco clubs. Disco at this time was a blend of 70’s funk, soul music, and rock. Most of the disco scene was in New York until 1979 when it spread to underground warehouses in Chicago and Detroit. The creation of house music was an attempt to get listeners hooked. So Chicago and Detroit DJs decided to introduce new techniques in the way disco was being presented. This combined with its separation from New York disco helped it evolve into its own genre. House music became known as more edgier, raw, and incorporated more diverse sounds. Electric keyboards, beat boxers, as well as beat machines helped to refine it into what it is today. Ohio, Indiana, Illinois, Missouri, and Iowa still have one of the largest house scenes to this day. Plenty of sub-genres of house music has formed since the 1970’s. There is acid house music, latin house, disco house, hard house, funky house, chicago house, NRG house, tech house, New York house, and the largest electro house. Electro house grew from house music and has shown its superiority since 2000. Electro house music differentiates from house music with its four to the floor beats, analogue basslines, high pitched leads, usually accompanied by a piano or string riff. The electro house tempo ranges from 120-130 bpm. The word electro comes from the 1980’s electro movement by which it was influenced. After the 1980’s synth pop sound came the electroclash movement of the early 2000’s. This is where electro house was born, particularly from the Detroit techno scene. The electro house genre has become steadily more popular on the Billboard Top 100. The mainstream electro house songs usually feature a remix of a slower original song like Kid Cudi, â€Å"Pursuit of Happiness† later remixed by Steve Aoki to become an electro house anthem. Other notable electro house DJ’s are Benny Benassi, Daft Punk, Crookers, David Guetta, Deadmau5, Justice, Klaas, MSTRKRFT, Spencer Hill, and The Bloody Beatroots. Electro house music’s popularity has been on the rise since 2000. You tube has allowed this genre to spread because unknown DJ’s know have an effective platform to showcase their talents. Electro house ravers have a belief system similar to the disco era. Both groups of young adults want to escape their problems and live in the present. Their intertwining beliefs stem from house evolving from disco. Electro house makes it their own by taking it to a level of embracing who you are. An electro house raver isn’t easy to define because they embrace who they want to be. When you walk into a rave you will see some people dressed in halloween type costumes such as angel wings and bright neons or others in regular street clothing. You don’t have to wear a particular type of outfit to fit in. Electro house lovers value this because it’s about the music. The drug ecstasy is widely embraced for this reason. It always the raver to unwind and leave behind their troubles. Disco in the 70’s and electro house of today both allow an escape for their generation. This is also why electro house has such a wide range of youth followers. There’s no pressure to be rich or be a certain race. Where ever you are from and what ever you do electro house will embrace you. How to cite Subculture: Electro House Raver, Papers