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To see what affects the rate of reaction between HCL and Mg

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Introduction

CHEMISTRY COURSEWORK Aim To see what affects the rate of reaction between HCL and Mg Scientific information Mg + 2HCl (r) MgCl2 + H2 Magnesium + Hydrochloric acid (r) Magnesium Chloride + Hydrogen ( s ) ( aq ) ( aq ) ( g ) Magnesium will react with hydrochloric acid, because it is higher in the reactivity series that hydrogen. When the two chemicals react a displacement reaction will take place and the magnesium will displace the hydrogen in the hydrochloric acid forming magnesium chloride and hydrogen gas. Apparatus Safety glasses Conical flask Measuring cylinders x3 Water Bath Water Hydrochloric Acid Delivery tube Strips of Magnesium Method * Firstly take a conical flask and place in the required amount of HCL and H20. * Fill a water bath and fill it with water and place in the bath a measuring cylinder to measure out the amount of H2 collected. * Connect the delivery tube from the flask to the water bath and place it under the measuring cylinder. * Carefully cut a strip of Mg to five cm lengh. ...read more.

Middle

* Changing the surface area of the Mg, if the magnesium had a bigger surface (i.e. cutting the magnesium into smaller pieces area each time the experiment was done,) then the acid particles will have a bigger area to collide with. * Changing the volume of the HCL * Varying the mass of the Mg * The weight before and after the experiment of the magnesium ribbon. * Type of acid used- Hydrochloric, Sulphuric and Nitric acid all would produce a different rate of reaction, so if I do change the type of acid then all three kinds would produce a different set of results. Fair Test To make sure that the experiment is a fair test different aspects have to remain the same for example * Making sure that the combined use of HCL and H20 is the same. * Using the same length of Mg * Using the same size-measuring cylinder when measuring the amount of H2 collected. * Collecting the H2 carefully, making sure that none of the bubbles escape. All of these factors will change the rate of reaction because of the Collision Theory. ...read more.

Conclusion

* Make sure that no HCL gets in your eyes * Make sure that all ties are tucked into shirt pockets in case acid is spilt or if you lean over into a flame in might set on fire. * Make sure that the work surface is clear when doing the experiment. Explation HCL H2O Gas collected 25 0 5s 4 5s 2 10s 4 10s 5 15s 7 15s 8 20s 10 20s 11 25s 14 25s 15 30s 17 30s 20 35s 20 35s 21 40s 21 40s 25 45s 25 45s 28 50s 27 50s 32 55s 28 55s 33 60s 29 60s 34 HCL H2O Gas Collected 25 0 5s 2 5s 0 10s 4 10s 4 15s 5 15s 8 20s 7 20s 10 25s 9 25s 15 30s 11 30s 17 35s 13 35s 21 40s 15 40s 25 45s 16 45s 28 50s 18 50s 31 55s 20 55s 35 60s 22 60s 36 65s 24 65s 40 70s 26 70s 40 75s 28 75s 42 80s 29 80s 85s 30 85s 90s 31 90s 95s 32 95s 100s 33 100s 105s 34 105s 110s 35 110s 115s 36 115s 120s 37 120s 125s 38 125s 130s 38 130s ...read more.

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