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To Investigate The Factors That Affect The Rate of Reaction Between Magnesium Metal and Hydrochloric Acid.

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Introduction

To Investigate The Factors That Affect The Rate of Reaction Between Magnesium Metal and Hydrochloric Acid. Magnesium reacts with dilute Hydrochloric Acid to produce Magnesium Chloride and Hydrogen. Mg2 (s) + 2HCl (aq) � 2MgCl (aq) + H2 (g) Aim To find which factors affect the rate of reaction between Magnesium Metal and Hydrochloric Acid. Safety Goggles Fire retardant protective clothing Hair tied back Heat proof matt Apparatus Boiling Tube with bung and delivery tube, Gas syringe - 100cm3, Stand, Measuring cylinder, Emery Paper, Magnesium Ribbon - 4cm, Dilute Hydrochloric Acid 1.2 10cm3 Thermometer, Bunsen burner and mat. Method We can record the rate of reaction by measuring at a regular interval, the volume of hydrogen collected. To ensure a controlled experiment, all variables must remain the same throughout the procedure. I will change the temperature throughout this experiment. My variables are length of magnesium ribbon and the volume of hydrochloric acid theses must remain the same. 1. Clean five, 4cm pieces of magnesium ribbon by pulling through emery paper. ...read more.

Middle

I also found that I need to take more results e.g. 20oc 40oc 60oc 80oc and 100oc I can not go any higher because the water in the water bath will boil and the temperature does not change In the water it just turns into a gas. I also need to measure the volume of gas given off every 10 sec. Results for preliminary experiment. Temperature oc Volume of gas ml 20 43 40 42 60 45 80 49 The experiment Extra Apparatus Tripod Gauze Water bath Method After doing the preliminary experiment I have found that I need to use a water bath this will make it easier to measure the temperature. By filling a beaker with water and placing on a tripod with gauze then using a Bunsen burner heat the water. Before I repeat the experiment you must clean the boiling tube and dry it to stop any left over solution reacting with the experiment. Results 1 Temperature oc Volume / Time Ave Total Of gas given off/cm3 Rate 20 09 10 0.9 20 20 1 1.024 38 30 1.27 ...read more.

Conclusion

The higher the temperature the more gas is given off. My graph shows that the higher the temperature the faster the rate of reaction. This shows that increasing the temperature has two effects one it increase the frequency of collision and increases the proportion of collisions that are effective. As the temperature rose there was an increase of movement in the particles, and therefor more reactions. As the temperature was increased the particles have more energy. More of the collisions produced products, so the rate was faster. The more collisions that happen between the particles in any given time, the faster the reaction will be. When the temperature was increased the particles move quicker. So they are going to have more collisions. My conclusion is supported in experiment 1 and 2 but not in 3 there are many factors that could have lend to this result see below. Evaluating My procedure used was capable to obtain reliable results. In the first experiment I gained accurate results with only one anomalie at 80oc this result fell lower then my best fit line. When repeating this anomalie I gained the result 1.7cm3/s which is shown on my graph as repeat. Amy Smart 1 28/04/07 ...read more.

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