Plan

In my investigation I will examine how the concentration, surface area, temperature and mass affect the rate of reaction between magnesium and hydrochloric acid. I will investigate how the concentration of my Acid affects the rate of reaction. I will do this because my task is to study how different factors affect the rate of reaction. I am using the method I have chosen as personally I find it the easiest because I have had practise performing it before using similar material. The investigation will answer my question as I know that when Hydrochloric acid comes into contact with magnesium a chemical reaction begins, the formula for the reaction is:

Magnesium+Hydrochloric Acid→Magnesium Chloride+Hydrogen
Mgs+2HClaq→MgCl2aq+H2(g)

Rate of Reaction= 1Time Taken for…Cm3 to be produced
Prediction
I believe that as the concentration of acid increases, the faster the rate of reaction as I know collision theory should play a part in my practical: collision theory states that the greater the concentration the greater the greater number of particles meaning a greater number of potentially successful collisions and so a greater rate of reaction.

The investigation will answer my question as I already know that there are many variables that could affect the rate of reaction, the variable I am using being one of them:
* Temperature- The higher the temperature the greater the energy so the higher the chance of successful collisions.
* Concentration- If there are more particles (a more concentrated solution) the particles will collide more often and so the reaction will occur more quickly.
2XConcentration2XCollisions2XRate
* Particle size- As the particle size Decreases the rate of reaction Increases. If a particle is large it will have a relatively small Surface Area. Most of the chemical is on the inside of the particle and so by splitting it up the previous insides becomes the outsides. E.g.:... [continues]

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