Effect of Surface Area on Reaction Rate

Effect of Surface Area on reply RateSurface Area vs. Reaction RateHow does the come to the fore theatre of pure reprimand net pulleys affect the ramble of dissolution in piddle?Chandler HultineAbstractThe innovation of this science laboratory was to investigate how get on state affects the response order of a substance in a solution. This lab was put together to find out how differentiating muster commonwealths of pure have words pelf multiplys would affect the lay of dissolution in water.The investigation was undertaken by using five different groups of pillage engine blocks, for each one group having a different surface field of battle than the others. The closures were submerged and stirred in a solution of water until they completely fade away, and the while it that it took them each to sever was recorded. The long-acting the era it took for the blocks to dissolve, the slower the reaction rate, and vice versa.The initial hypothesis, if the surfa ce field of honor of the cylinder block outgrowths, past the reaction rate of the dissolution of the cube in water exiting also increase because to a greater extent than of the cube provide be exposed to the water which will altogetherow for more(prenominal) collisions of particles to turn over at a while, was accepted due to a positive correlativity among dissolution convictions and surface orbital cavity of cubes. The more baffled up a cube was, the faster it tended to dissolve in water and vice versa, because the more broken up cubes had more surface area. (Abstract row 212)IntroductionThe over exclusively aim of this lab is to investigate how surface area is related to reaction rate in terms of the dissolution rate of a substance in a solution. This lab will be experimenting with wampumpeag cubes of the same volume, but different surface areas to see how scarce surface area affects the rate of dissolution.How does the surface area of pure cane slit cubes af fect the rate of dissolution in water? If the surface area of the cube increases, then the reaction rate of the dissolution of the cube in water will also increase because more of the cube will be exposed to the water which will exclusivelyow for more collisions of particles to occur at a time.3,6With most things in life, size is a very important factor that people consider in many a(prenominal) choices they make, whether it be deciding between the newest smartph cardinals or burning wood chips versus intact logs in a fire.1 Seeing how size affects something is key when taking an stage/idea and making it more exertionive. The purpose of this experiment is to see how the do of surface area of a substance is related to the reaction rate when said substance is placed into a solution.5 This investigation is to see how the reaction rate of a substance can be either change magnitude or decreased when placed into a solution.InvestigationFor the investigation, a pastiche of roots that related to how surface and dissolution/reaction place are related. The main sources take but are not limited toResearch on the root word done by NASA,An excerpt from Ansels Pharmaceutical Dosage Forms and do drugs Delivery Systems,And experiment research from sciencebuddies.org titled Big Pieces or minor Pieces Which React Faster?.These sources have provided a great amount of stress information, especially the article by NASA involving an explanation on the cor sexual relation between surface areas and reaction rates.MaterialsIn order to complete this experiment, the following materials were involve25 Sugar cubes (any brand, just make sure all the same)1 Timer5 Beakers (250mL)1 Pipet1 Thermometer1 lingua1 Paper towel or piece of paper ( deal sugar cubes on)1 Hammer or weighted object (to crush one of the sugar cubes into a mill like state)1 Pencil and paper (to record observations)1 Stirring device of any kind (like a chopstick)ConstantsWater source, brand of beakers, size of beakers, amount of water, stirring device, type of sugar cube, temperature of water, temperature of surroundings, temperature of beakers, cuts in sugar cubes, pipettes, timer, thermometerProcedureDivide the 25 sugar cubes into groups of five so that each group has five sugar cubes.Leave the first base group untouched. This will be the group that has the smallest surface area.Take the south group of five sugar cubes and, using the knife, cut each cube in fractional.Take the third group of sugar cubes and cut each cube into quarters (cut each one in half then cut the halves in half).The fourth group will be cut into eighths.The last group of sugar cubes will be completely realm up into a powder. This will be the group with the greatest surface area.Once all the cubes are cut up and put into groups, call for up each of the 5 beakers with water to the 200mL mark. Use a pipet to make the measurement precise.Wait 30 minutes after plectrum the beakers with water to ensure th ey are all room temperature.Begin with the fierce sugar cube. With the timer and stirring device at hand, place the unmown cube into the water-filled beaker and begin the timer and stirring as soon as the sugar cube is placed in the water.Stir the sugar cube in the water until it completely dissolves/disappears in the water.Stop the timer as soon as the sugar cube completely dissolves.Record the results on a pre-made data table.Repeat steps 6 to 9 for all variants of the sugar cube for one group.Repeat the entire experiment for all 5 groups of sugar cubes, making sure that one group is immaculate before moving onto another group. DO NOT finish dissipation all of the sugar cubes of one specific surface area size and then moving onto another set of the same surface area sized cubes make sure the experiment is carried out group by group. Treat each group with the five different surface area sized sugar cubes as an individual experiment. This way a union of 5 experiments will be ca rried out.Data streamlet 1sizing of Sugar CubeTime (seconds) for dissolution overflowing412 half217 suck123Eighth82Powder51 test 2 size of Sugar CubeTime (seconds) for dissolution honest401Half202 tail assembly150Eighth77Powder58Trial 3Size of Sugar CubeTime (seconds) for dissolutionFull426Half236Quarter120Eighth68Powder47Trial 4Size of Sugar CubeTime (seconds) for dissolutionFull455Half241Quarter117Eighth81Powder55Trial 5Size of Sugar CubeTime (seconds) for dissolutionFull423Half221Quarter136Eighth71Powder52 loaded time for full sugar cube 423.4Mean time for half sugar cube 223.4Mean time for quarter sugar cube 129.2Mean time for eighth sugar cube 75.8Mean time for powder sugar cube 52.6Results and DiscussionThe results of this experiment show that a more broken up sugar cube resulted in a faster dissolution rate of the cube in water, and vice versa when thither were longer rates of dissolution for sugar cubes that were less broken up. Since the purpose of this experiment was to fi nd the relationship between surface area and reaction rate, this experiment was successful.Trial 1 data shows the times nearly macrocosm cut in half as the sugar cube becomes more wiped out(p) up, except for the transition between the powder and sugar cube broken up into eighths.Trial 2 data also shows the time between each tier of sugar cubes being split in half as the surface area increases. However, this is not true for the half-broken up and quarter-broken up sugar cubes. The time in seconds for dissolution rate for those ii sugar cubes only had a difference of 50 seconds, which is not redden most to half. This makes me wonder what happened during that part of the lab, because the data does not follow the accomplished trend like the rest of my experiment results. A possible source of error for this ladder was that I did not collect all of the sugar from the sugar cube after it was cut. When all of the sugar is not completely collected, the data can become skewed because n ot all of the sugar cube is actually being dissolved in the solution.Trials 3, 4, and 5 all show around the similar results. The times are very close to each other for each size sugar cube that was dissolved. Trials 3, 4, and 5 are also relatively close to the data shown in trial 1. This shows that there was a little less precision that went into trial 2.What does all of this data mean? Well for starters, the data and experiment are applicable for any other experiment out there that tries to determine the relation between surface area and reaction rate. The reason for this is because whenever different rates of reaction are being tested for, a change in the surface area of a reactant/variable will have an effect on the rate of reaction, because the alteration of surface area means that the frequence of particle collisions is altered as well.1,3,7 For example, if the surface area (of an object that is close to be placed in a solution) is doubled, that means there will be twice as much area for particles to potentially move with on the object as compared to the original object that has the original surface area.3 This is true for all aspects of reaction rate surface area plays a substantial role whenever reaction rate is tested for.1,3Conclusioninitial Hypothesis If the surface area of the cube increases, then the reaction rate of the dissolution of the cube in water will also increase because more of the cube will be exposed to the water which will allow for more reaction between water and sugar cube to occur at one time.3,6There was a strong, positive coefficient of correlation between the data that was collected and the initial hypothesis. From looking at the data, it is evident that the cubes that were more broken up that had more surface area dissolved much faster than a cube that was less broken up and did not have as much surface area. The data shows that more surface area does mean faster reaction rate, and vice versa.3 The powder/completely crushe d up sugar cube had the quickest time for dissolution in water which was on average 52.6 seconds, whereas the full sugar cube that was untouched and had the smallest amount of surface area had the slowest time for dissolution which was on average 423.4 seconds. Therefore, the hypothesis is accepted with the support of the data. The bigger cubes that were not cut up took the longest to completely dissolve, whereas the finely crushed up cubes dissolved quickest.5The accuracy of this experiment could be slightly amend in the future by adapting a more consistent and genuine method of stirring the sugar cubes around when they are placed in water. This would improve the accuracy of the time that each cube takes to completely dissolve in the solution of water.BibliographyReaction range. Publication. NASA, n.d. Web. 1Allen, Loyd V., Nicholas G. Popovich, Howard C. Ansel, and Howard C. Ansel.Ansels Pharmaceutical Dosage Forms and drug Delivery Systems. Philadelphia Lippincott Williams W ilkins, 2005. Print. 2Clark, Jim. The Effect of Surface Area on Rates of Reaction.The Effect of Surface Area on Rates of Reaction. N.p., n.d. Web. 06 May 2013. 3Bayer HealthCare, 2005. Temperature and Rate of Reaction, Bayer HealthCare, LLC accessed May 8, 2007http//www.alka-seltzer.com/as/experiment/student_experiment1.htm. 4Olson, Andrew. Big Pieces or Small Pieces Which React Faster?Big Pieces or Small Pieces Which React Faster?Science Buddies, n.d. Web. 06 May 2013. 5Kenneth Connors, chemical substance Kinetics, 1990, VCH Publishers, pg. 14 6Isaacs, N.S., Physical Organic Chemistry, 2nd edition, Section 2.8.3, Adison Wesley Longman, Harlow UK, 1995. 7(Bibliography Words 126)