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Investigating Rates of Reaction
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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This document was downloaded from Coursework.Info - The UK's Coursework Database Click here to visit Courswork.Info Investigating Rates of Reaction Aim To find out how changing the concentration of Hydrochloric Acid affects the rate of the reaction between HCl and Sodium Thiosulphate. A chemical reaction is a chemical change that takes place when two substances are put together. There are many different factors that can affect how fast or slow a reaction is. These are: * (1)Changing the concentration of one of the substances - which increases the number of particles - which increases the chance of collisions between particles. * Changing the surface area - if the particles surface area is increased, it increases the chance of a collision with other particles. * Increasing the temperature - gives the particles more energy, which makes them move faster, which increases the chance of a collision. * Adding a catalyst - which reduces the ACTIVATION ENERGY - the...
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