How does Concentration affect the rate of reaction between Magnesium and Hydrochloric acid?

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How does Concentration affect the rate of reaction between Magnesium and Hydrochloric acid?

Secondary resources:

Chemical reactions only occur when reacting particles collide with each other, with sufficient energy to react, this is called the collision theory. The minimum amount of energy required to cause this reaction is called the Activation energy. There are four main factors which affect the rate of reaction. The first factor is:

Temperature of reactants:

When the temperature increases the particles move around faster
(because they have more energy). Because the particles are moving faster , they are more likely to collide. When the temperature is low, the particles are slower and they also collide less. The
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If there is a smaller surface area there is less collisions, therefore there is a decrease in the rate of reaction.

Aim:

My aim for carrying out this investigation is to find out whether concentration effects the rate of reaction between Hydrochloric acid and magnesium metal.

Mg+2HCL ---- MgCl +H

Magnesium +hydrochloric acid ---- Magnesium chloride +hydrogen

Pre-test:

I have decided to use the water displacement method to collect the gas. While carrying out my pre-test, I performed experiments with different amounts, times, lengths etc in order to establish the most appropriate quantity.

I have decided to use magnesium granules instead of magnesium strips and magnesium powder because when I experimented with magnesium strip
It took way to long for the gas to be collected. When I experimented with magnesium powder the gas was collected to fast. So I decided to use magnesium granules because the time of the gas to be collected. As you can see the results below match my statement.

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Magnesium (g) HCA (cm) H20 (cm) Time (s)

0.1g (granules) 20cm 0 12.38
0.1g (strip) 20cm 0 26.70
0.1g (powder) 20cm 0 No time
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