The Effect of the Concentration of Hydrochloric Acid on the Amount of Hydrogen

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The Effect of the Concentration of Hydrochloric Acid on the Amount of Hydrogen

AIM

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I want to find out how the concentration of Hydrochloric acid affects

the amount of hydrogen or the time it takes to produce 30cm3 of gas,

when the Hydrochloric acid reacts with the magnesium powder.

Prediction

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I predict that the amount of hydrogen in the measuring cylinder will

increase as the concentration increases; this is because if there is

more concentration there shall be more particles for the magnesium to

collide with so the reaction will be faster. I think that my

prediction is true because if you increase the concentration there are

more particles in the test tube so there is more likely to be a

collision and when a collision happens there is a reaction and

hydrogen is produced. I plan to take 5 readings and repeat one more

time to be able get an average. I predict the time it takes the

hydrogen to reach 30cm3 will range from 5s to 25s. I think that the

reaction will happen like this Magnesium +Hydrochloric acid>

Magnesium Chloride + Hydrogen

Mg(s) + 2HCL(aq)> Mgcl2(aq) + H2(g)

Diagram

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[IMAGE] Measuring cylinder

[IMAGE][IMAGE][IMAGE][IMAGE] Test tube Hydrogen Pipe

[IMAGE]Bung

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