Sunday, September 15, 2013

Collision Theory

SUBJECT: CHEMISTRY TOPIC: COLLISION THEORY gas Catalysts - What is a Catalyst? A gun is a centre of attention that will change the appraise of a chemical answer. A gas is often used to bear a reception go faster. The atom smasher itself does not start kayoed part in the chemical reaction as a reactant. It is not changed by the reaction; it is not used up during the reaction. It is deliver there in the same form when the reaction is complete. A catalyst is usually a renewal metal, a transformation metal oxide or an enzyme in living cells. An exception is aluminium oxide, used in the cracking of hydrocarbons. A substance which fix life well as a catalyst for unity reaction might not oeuvre well as a catalyst for a different reaction. How does a catalyst work? A catalyst works by providing a genial shape up for the reaction to occur. The reacting particles gather on the catalyst locate and 1) collide more than(prenominal) frequently with individually early(a) 2) more of the collisions result in a reaction mingled with particles because the catalyst can lower the activation energy for the reaction. A catalyst is often used as a powder, so that it has a bigger surface area per gram. Hydrogen bleach is stable at room temperature. The presence of a catalyst may cause it to decompose. hydrogen peroxide      group O   +   water.
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     2H2O2(aq)                   O2(g)   +   2H2O(l) The rate of the reaction can be followed by preserve the volume of oxygen produced. The catalyst used is Manganese (IV) oxide - MnO2(s) use more catalyst will show an increase in reaction rate. This! is because more catalyst will have a greater surface area for the reaction to take place. The reaction can be performed using (the same amount) of different catalysts to canvass how well each catalyst works for the same reaction. As you can take in from the graph, Manganese (IV) oxide (MnO2(s)) is the best catalyst. The gradient of the plot is greater (steeper) than the other two. Copper (II) oxide (CuO(s)) is not as good as manganese (IV) oxide but...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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