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Rate Of Reaction

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Rate of Reaction


To find out how different concentrations change the rate of reaction


In this experiment the collision theory is in use. It means that when the concentrates solutions of hydrochloric acid is use, more particles are found in the same space, which means they are more likely to collide with each other. the more the concentrated the solution, the more of the collisions with the particles, which increases the rate of reaction.


As the concentration of the solution increases the rate of reaction increases with it


The reason I think that my prediction is right, is because I know that more concentrated the solution is, the quicker the reaction will happen.

List of equipment:

In this experiment I will use boiling tube, measuring cylinder, timer, hydrochloric acid(0.5 , 1.0, 1.5, 2.0, 2.5, 3.0 Moles), magnesium, test tube rack, clamp stand, a ruler and i will have to wear goggles to protect my eyes.

Preliminary test:

The thing I will change is the concentration of acid

What I will measure is the time that it takes gas to reach 5cm3

Things I will keep the same is the amount of solution and the length of the magnesium


Firstly I will set my experiment as shown on the next page

I will make sure everything is straight

I will get all of my 6 different solutions, every time

I use a solution I will measure 10cm3 of it and every time

I will use two pieces of magnesium of length 10mm

I will measure time it takes the gas to get to 5cm3 and hopefully it will work, then I will measure time until it gets to 10cm3

Table of results for preliminary:

concentration Time it takes to get to 5cm3 of gas

0.5M 0.83s

1.0M 0.18s

1.5M 0.12s

2.0M 0.01s

2.5M 0.02s

3.0M 0.01s

In my preliminary I found it hard to take the right time when I was waiting for the gas to reach 5cm3 because the reaction happened really fast so I think that may be a reason why I got an anomaly so now I will measure the time it takes to get to 10cm3 of gas. I also will repeat the experiment twice just to make sure results are reliable.

concentration Time it takes to get to 10cm3 of gas

0.5M 0.219s

1.0M 0.42s

1.5M 0.15s

2.0M 0.07s

2.5M 0.10s

3.0M 0.06s

concentration Time it takes to get to 10cm3 of gas

0.5M 0.410s

1.0M 0.51

1.5M 0.16s

2.0M 0.06s

2.5M 0.05s

3.0M 0.04s


concentration 1st test 2nd test average Average rounded up

0.5M 0.219s 0.410s 0.314.5s 0.315s

1.0M 0.42s 0.51s 0.46.5s 0.47s

1.5M 0.15s 0.16s 0.15.5s 0.16s

2.0M 0.07s 0.06s 0.06.5s 0.07s

2.5M 0.10s 0.05s 0.07.5s 0.08s

3.0M 0.06s 0.04s 0.05s 0.05s

I have found the average's so I can draw a graph for it, I have also rounded up the averages so it is easier to draw a graph for it.

Now I'm going to work out the rate of



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