Catalysis and catalysts Essay Example | Topics and Well Written Essays - 750 words

Catalysis and catalysts - Essay Example With this introduction, this essay will demonstrate how catalysts speed up reactions, explain how they work by using the enthalpy reaction profiles, and demonstrate the difference between the heterogeneous and homogenous catalysts and showing examples (Bruice, 2007). A reaction can be sped up by a catalyst since they offer an optional route for the reactions to happen. They lessen the necessary reaction energy for the reactants to create products, therefore, atoms; at any given time will have the necessary energy for activation in order for the products to form. This principle is based on the collision particle theory (Gates, 1992) Reactant molecules interaction with catalysts to provide other routes for the response that connects a lower activation as compared to that of the non-catalyzed reactions. Many of the molecules that interact have energies that are bigger as compared to the lower enthalpy activation. Many of the collisions therefore end in a successful reaction and the conversion rates of reactant to product are enhanced and this demonstrates how catalysts function through enthalpy profiles (McNaught and Wilkinson, 1997) The two main groups of catalysts are homogeneous and heterogeneous. The catalyst in a heterogeneous reaction is in a diverse state as compared to the reactant. Catalyst in a homogeneous reaction is in a similar state as the reactant(Bell, 1973). This is pointless, in practice, because ethane that is extremely useful is being converted to ethane that is relatively useless. The same reaction however will occur with any compound having a double bond of carbon-carbon. In the vegetable oils hydrogenation one of the vital industrial applications is in its use in making margarine that also entails carbon-carbon double bond reaction in the vegetable oil with a nickel catalyst having a hydrogen presence. Hydrogen is created as before a link with the carbon, and that eventually also ends up breaking free. On the nickel’s surface

A written opinion of your legal thoughts Movie Review

A written opinion of your legal thoughts - Movie Review Example However, the manner in which the officer attacked him was a violation of the human rights. The police officer used a chokehold to bring Eric to a position that he could be handcuffed. The chokehold seemed to have suffocated Eric, and he succumbed to suffocation. There is no possible explanation that can set the officer free from his actions. The move was unwise and a violation of the human rights and the code of ethics and conduct. Similar to Eric Garner’s case, the video on Rodney King’s death illustrates how police officers ignored their duty to uphold general responsibility towards suspects. The video indicates police officers roughing up Rodney. The worst part is that Rodney did not use any force or resist arrest. He was powerless and helpless. The police officers took the law in their hands. Their inhumane action was governed by personal issues rather than professionalism. Unlike the Garner situation, the police find Raheem in a brawl. He resists arrest, and the police officer decides to put him down by choking him. The video, an excerpt from the movie â€Å"Do the Right Thing, 1989† Radio Raheem, a fictional character, is held in a chokehold. The video indicates the manner in which police use brutal force to maintain a suspect who resists arrest. However, the police office ends up being a liable for murder due to neglecting the code of ethics and conduct in his line of