Investigate a factor which affects the rates of reaction between magnesium ribbon and hydrochloric acid.

... INVESTIGATING REACTION RATES Aim: To investigate a factor which affects the rates of reaction between magnesium ribbon and hydrochloric acid. Background Knowledge The rate of a chemical reaction is the speed that the reaction takes to finish. For a chemical reaction to take place reagent particles must collide with each other and the collision must have enough energy if a reaction is to take place. This energy is called the activation energy. There are several things that can be done to speed up the reaction, which increase the rate. * Temperature Increasing the temperature increases the energy particles possesses, and so more particles possess the minimum energy (activation energy) and so reaction is faster. * Concentration of acid There are more reactant particles at a higher concentration in a volume. Therefore there is more chance of collision. Dilute solution Concentrated Solution * Surface Area Increasing S.A increasing rate of reaction. This is because smaller particles have

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