In my experiment I am going to change the strength of the solution to see how this affects the rate of reaction with magnesium.

Previous Knowledge

The rate of reaction is the time it takes for a reaction to work. I already know that concentration, temperature, surface area and a catalyst will affect the rate of reaction.

Concentration

The more concentrated the acid is the quicker

the experiment will work, as there is more particles for something to react with.

Temperature

The hotter it is the quicker it will work, this is because the particles will be moving much quicker as they have more energy.

Surface area

The big the surface area the faster it will react as there is more area for the particles to react with there for it will work quicker.

Prediction

I predict that the potato in the 0% Solution

will become larger than before it was put in it. The potato in the 10% solution will become smaller than it was before because Osmosis goes from a weak to a strong solution. I predict that this will also happen to the other ones I test.

Apparatus

4 boiling tubes

Stop clock

4 pieces of magnesium

0.5m, 1m, 1.5m, 2m Hydrochloric Acid

Boiling tube rack

Measuring cylinder

Diagram

Method

First of all I collected all the equipment stated in the apparatus and then set it up as shown in the diagram.

Results

Conclusion

From this experiment I found out that it did what my prediction said and that osmosis does travel from a weak to strong solution

Evaluation

Over all I think that the experiment went well. One of my results was out but I think that I just got the solutions label the wrong way or mixed them up wrong.