Saturday, November 30, 2013

Investigation: How does the concentration affect the rate of a reaction?

Investigation: How does the concentration affect the post of a reception? Aim: To check the effect of concentration on the localize of a chemical substance reaction between sodium thiosulphate solution and hydrochloric acidulated. Reaction: I will look into the reaction between different concentrations of sodium thiosulphate solution with hydrochloric acid. Na2S2O3(aq) + HCL(aq) = S(s) = H2O(l) + SO2(g) + NaCl(s) (sodium thiosulphate + hydrochloric acid = mho + water + sulphur dioxide + sodium chloride) Background Information thither are troika personal manners of measuring the say of reaction: 1.         By find the time taken for a precipitate to obscure a mark on a piece of paper/card. 2.          variety show in spile (usu each(prenominal)y caused by a gas existence given off) 3.         The passel of gas given off by using a syringe. There are four factors that affect the evaluate of reaction: 1.         T emperature. 2.         Concentration (pressure in the case of a gas). 3.          size of particles (surface area). 4.          armorial bearing of a catalyst. The collision theory is a sort of explaining the above factors which effect the rate of reaction. The four factors can be explained in footing of increase the subject of collisions, and in terms of temperature, increases the rate at which collisions occur.
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Temperature When temperature is increased, the particles move much quickly, hence increasing the number of collisions. The temperature increase makes the parti cles move instantaneous by well-favoured t! hem more energy. It is this way that collisions can happen at a faster rate.         The temperature will be controlled in this experiment. This is because we are lone(prenominal) testing the effect of changing the concentration, and if the temperature varies too, we will not stay put an finished result. We will make sure the temperature is the same all the way through. Concentration (pressure) If the solution is made more concentrated, it... If you want to entrance a full essay, order it on our website: OrderCustomPaper.com

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