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Rates Investigation - Hydrochloric Acid and Magnesium Ribbon.

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Introduction

Rates Investigation - Hydrochloric Acid and Magnesium Ribbon In this experiment I am going to investigation that hydrochloric acid will react with the magnesium strip and produce hydrogen gas. The word equation for this experiment is: Magnesium + Hydrochloric Magnesium + Hydrogen Acid Chloride Factors There are a number of various factors which need to be taken into consideration: * Temperature (If there are low temperatures then the particles will not collide very often but, hydrochloric acid and magnesium strip were heated up they will move around and gain energy). * Concentration of acid (If the concentration of acid is much higher then the reaction time will be less but if the concentration of acid is much lower the reaction time will be a lot longer). * Surface area * Movement of Equipment (If the equipment is moved (shaken) during the experiment the practical will move around a lot more and therefore collide a lot more and the reaction will take a lot less time My Factor which I have chosen I am going to try and control the concentration of acid. Prediction For my preliminary experiment I predict that the lower the volume of hydrochloric acid with the higher volume of water the rate of reaction will be a lot longer because the concentration of acid will be low. ...read more.

Middle

My Experiment 2 - The Investigation Prediction For my other experiment I predict that the lower the volume of hydrochloric acid with the higher the volume of water, the volume of gas left in the measuring cylinder will be less. Also the higher the volume of hydrochloric acid with the lower the volume of water, the volume of gas left in the measuring cylinder will be greater Diagram Equipment Hydrochloric Acid Water 20ml Measuring Cylinder 100ml Measuring Cylinder Conical Flask 14, 3cm Magnesium Strips Stop Watch Water Bowl Tube and Stopper Method What I am going to do in this experiment is firstly measure out 20 ml of hydrochloric acid. Place 2 magnesium strips into a conical flask and put the lid on. Fill a 100 ml measuring cylinder into a half filled bowl of water. Then make sure that the tube coming out of the conical flask is connected up in the measuring cylinder so no bubbles can escape. Then add the 20 ml of hydrochloric acid in the tube at the top and switch of the stop watch and time how long it takes for all the water to leave the measuring cylinder. ...read more.

Conclusion

Evaluating I could improve my preliminary experiment by using a bigger size up of test tubes and using 2 magnesium strips with the same amount of hydrochloric acid see how long the magnesium strips take to dissolve then. In my Investigation I could improve this experiment by using a bigger measuring cylinder and doubling the amount of hydrochloric acid and the amount of magnesium strips that go into the conical flask. There were only a few anomalous results in my preliminary results from 'Graph 1' - the co - ordinate is concentration of acid - 0.80 and time - 447. This result is probably anomalous because the timer may have been started a little late of more water was put into the test tube than there was supposed to. Another anomalous result from my preliminary results was on the 'averages' graph with the co-ordinate concentration of acid - 0.80 and time - 354. The only reason why this is anomalous is because the result from 'graph 1'. There were only a few anomalous results from my investigation from 'graph 2' there was the co-ordinate concentration of acid - 1.40 and volume of gas - 56 this could have been caused by the timer being switched on a bit earlier than it was supposed to. Emma Caveney 11 Shave Page1 ...read more.

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