To Investigate The Effect Of Varying Concentration On The Reaction Between Magnesium Ribbon And Hydrochloric Acid.

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To Investigate The Effect Of Varying Concentration On The Reaction Between Magnesium Ribbon And Hydrochloric Acid.

Factor To Be Investigated

The factor I have chosen to investigate is the effect of varying concentration of hydrochloric acid, and to see how that affects the reaction between it and magnesium ribbon.

Prediction

I predict that the higher the concentration of hydrochloric acid in the solution, the faster 35cm cubed of hydrogen will be produced.

I predict this will happen because of Collision Theory. Collision Theory states that the higher the concentration of a substance, the closer together the ions of that substance is. In this case, this means that they higher the concentration of HCl ions in the solution, the more often they will collide with the magnesium ribbon, and therefore the reaction happens quicker.

Apparatus

In order to perform the experiment, the following apparatus is needed.

The letters in brackets represent the key on the diagram

Hydrochloric acid (HCl)

Magnesium ribbons (Mg)

A conical flask (Cf)

Measuring cylinders (Mc)

Gas syringe (Gs)

Stop watch (Sw)

Ruler (R)

Scissors (S)

Retort stand (RS)

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Water (H2O)


Method

Firstly, I will take five magnesium ribbons. Using the ruler and scissors, I will measure and cut them until they are exactly 5 cm long. Once done, I will, using a measuring cylinder, measure out the volume of hydrochloric acid and, using a second measuring cylinder, measure out the volume of water needed to produce the required concentration of hydrochloric acid. I will then proceed to pour the two liquids into the conical flask. I shall then drop a piece of magnesium ribbon into the conical flask, quickly stopper it with the tube ...

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