'Rates of Reaction Lab Investigation\r'

'Chemestry Lab order of Reaction (Picture from: http://sciencespot. net/Pages/kdzchem. html) The crop of response is how fast or slow a reception is completed. This is important for factories and chemists all everyplace the world. What happenes during a answer is atoms or molecules that conflict and go new molecules. You can walk out this lay out of response with: temperature of reactants or suroundings, clear area of reactants, if in that respect is a accelerator present, but in theis lab the parsimoniousness was changed as the IV. The reaction pass judgment is masured in change/ period, in this case it was: bulk of atom smashers produced/minutes.Gas was taxd in ml/minute, and this was the DV. quarry of lab was: To find the change in rate if reaction, depending on the preoccupation of hydrocloric battery-acid. system: If the concentration of hydrocloric acid is increased, the rate of reaction leave increase and the volume of bodges will increase. The reasoni ng behind the hypothesis is that when there are more than than molecules in the reply the reactants collide more often, so more product is do in a shorter staye of time. The equation was: Mg + 2HCl > MgCl2 + H2\r\nSimilar denomination: measure Reaction Rate utilize Volume of Gas ProducedIndependent variable| restricted variable| Controled variables| Value| How to control the CV| Concentration of acid| Rate of reaction| Vol of acid| 20 ml| beatnik exploitation a 50ml Measuring piston chamber| 2 moles pr. L| Vol of gas| temporary worker of acid| Room temp. | Not controlled, moreover montored| 1 moles pr. L| | Amount of Mg| 5 cm or laurel/ 0. 07g| Ruler, and weight| 0. 5 moles pr. L| | Precence of throttle valve| No| Not have a catalyst| 0. 25 moles pr. L| | part of acid| Hydrocloric| Have like sign of acid| Method: 1. Gather aparatus and materials, and set out up as shown in draw below aparatus list. 2. bucket + water 3. euphony temp, in room and water 4.Fill measu re cylinder with water 5. rubberise thermionic vacuum resistance + side gird test tube 6. Obtain 0. 08 g using a weight, place in side-armed test tube 7. 20 ml HCl of 2 moles pr. L in touchstone cylinder 8. Place measuring cylinder in bucket with water, upside down, without business line leaking in to the cylinder when flipped. 9. Puor HCl into side-armed testtube. 10. Start the stopwatch 11. Close the top of the side-armed test tube by placing rubber tap 12. system of weights 3 min. be accurate using the stopwatch 13. Record ml of gas produced 14. Reapeat the prove twise pr. Concentration: 2 moles pr L, 1 mole pr. L, 0. 5 moles pr. L and 0. 25 moles pr. L Aparatus list: Sidearemd testtube †Rubber plug †Rubber tube †Bucket †Water †2x 100ml measuring cylinder †400ml Beaker †40 ml in each concentration type of HCl acid, 2, 1, 0. 5 and 0. 25 M. Pr. L †8x 0. 08g of Mg ribbon †Stopwatch afflictive data give in showing core of gas cr eated in the two trials of the experiment: Concentration in moles pr. L| political campaign 1 †ml og gass produced in 3 min| Trial 2 †ml og gass produced in 3 min| 0. 25| 8| 10| 0. 50| 30| 32| 1. 00| 70| 73| 2. 00| 61| 65| First proceced data table showing average of gas made: Concentration in moles pr. L| come of trial 1 and 2 in ml of gas produced in 3 min| 0. 25| 9| 0. 50| 31| 1. 0| 71. 5| 2. 00| 63| Proceced data table showing rate of reaction: Formula used=ml of gass produced/time (in endorsementonds) Concentration in moles pr. L| Rate of reaction calculation in ml/sec| Rate of reaction result in ml/sec| 0. 25| 9/ clxxx| 0. 05| 0. 50| 31/180| 0. 17| 1. 00| 71. 5/180| 0. 40| 2. 00| 63/180| 0. 35| Graph showing the rate of reaction: Conclusion: As the results intelligibly show, the rate of reaction increases rapidly and this powerfully supports my hypothesis. The amount of succesfull collisions increased, because of increased number of atoms in the product, so when t he concentration was increased it rate of reaction increases.There are more collisions because of more atomes, and therefor more succesfull once. Evaluation: ergodic errors: * Therometer used to measure temperature * Inaccuracy of +/- 1 C * Balance weight used to measure Mg ribbon * Inaccuracy of +/- 0. 01 g * Measuring cylinders used to measure volume of acid and volume of gas * Inaccuracy of +/- 0. 5 ml * Ruler used to measure Mg ribbon * Inaccuracy of +/- 0. 1 cm ways to prevent random errors and correct the regularity: †Compleet the experiment more times arrogant errors: †As you see in the graph, the quaternate result was anomalus.During the 3 minutes the atomic number 12 ribbon was â€Å"used up” in a very short period of time. The rate was so fast in the 2 moles per liter that it was over in under a minutte, but in the early(a) concentration types it tok longer time for the reaction to compleet. Therefor we have to grammatical construction away from th e highest concentrations, and focus on the trinity lowest. This was a big weakness in the lab. †When pouring the HCl acid into the side armed test tube, some of the reaction had been compleeted onward we had time to put the rubber hoopla on every time. The temperature was only monitored, non controlled. Ways to reduce systematic errors and improve the lab: * Have a shorter reaction time: shorten the time form 3 min to around 1 minutte. * Use a fisle-funnle to prevent gas leaking out before the stopper is fixed on the testtube. * Do the experiment in a controlled environment, like in a water bath. Sugestions to possible further investigations into this take: You can change the IV, to one of the other factors that affect rate of reaction. Eg. Take the same concentration of HCl acid and change the temperature, or the precence of catalyst.\r\n'