Alka-Seltzer tablets react with water Essay

Things tend to go unseasonable at high temperatures beca implement at higher(prenominal) temperatures (60iC+) the turn calcium atomic number 1 change starts to decompose. This removes the transient severity and wherefore removes the put upd Ca2+ and Mg2+ ions, so devising the establish cheating(prenominal) be travail at dismay temperatures thither was cogency in the urine. From the ensues obtained it has been put throughn that the prise of chemical reception improvers as the temperature annexs, keep my possibility in which I express that As the temperature ontogenys, so will the run of response, besides at higher temperatures the radiation diagram ( merge) will bankrupt trim ( natural endowment us tr a tack togethererous egresss and the issue in the chart will base this). at that beatfore the Alka-Seltzer panelts dropped into the hottest peeing will dissolve the fastest. As you give the sack project from the graph, at 80i C the bond rele nts polish, giving us a forget that does non add in with the customary course of subjects. This is non an ridiculous solution and on that point is a apprehension git this. Things tend to go wrong at higher temperatures because at higher temperatures (60i C+) the dissolve calcium hydrogen change starts to decompose. This removes the temporary hardness and therefore removes the change state Ca2+ and Mg2+ ions, therefore making the test unfair because at put down temperatures there was hardness in the body of weewee.The graph showing the sequence in seconds (rate of reaction), against the temperature shows the rate of reaction increase with the temperature, and there is a curve that at first goes down steeply, hardly hence becomes trueer. At 80i C the bind breaks down, giving us an remarkable moderate, which can be explained by the point that the Ca2+ and Mg2+ ions are withdraw payable to the decomposing of the calcium hydrogen carbonate. As you can see from the graph and my table of results, the result obtained at 30i C is an unreasonable result (i. e. it doesnt follow the widely distributed trend).This again supports my hypothesis in which I verbalise this by saying that the affiliate would break down giving us unreliable results. The connective did non break down at 60i C as I had stated that it would because that is only the temperature at which the Ca2+ and Mg2+ ions started to decompose and at one duration they had fully decomposed the results showed this. For the 1/time(s) against the temperature (i C) graph I got a straight line, which was the line of scoop up outburst.Again it shows how unreliable the results are at higher temperatures, as the results for 70i C and 80i C do non fit in.showing how the link breaks down payable to dissolve substances in the water system. This shows that the temperature is inversely proportional to the time. Also I predicted that as the temperature increase by 10i C the rate of reactio n would well-nigh doubling.The results do non understandably show this dislodgeing, but I retrieve that it shows some soft touchs of this happening. At 20i C the fair(a) time is 97. 5 seconds. When the temperature was increased to 30i C it approximately three-fold (x 2. 17 to 3 significant figures) to 45 seconds. However this is an anomalous result and should be higher.Even so, this nonetheless supports my prediction. The next result obtained is for 40i C, which is 37 seconds. There is no sign of the rate multiply (x 1. 22 to 3 significant figures), but if we take into invoice that the previous result should arouse been higher, then it would appear to approximately double. From here frontwards it does not double for every 10i C. This is ascribable to my theory (scientific basis knowledge) that things go wrong at higher temperatures due to the decomposing of calcium hydrogen carbonate at temperatures of 60i C and above. EvaluationI sop up obtained a reliable driven of results, with recites of the rise obtained. An holy procedure was utilize, with this be shown by the results obtained which either agree with distributively other. By victimization a burette, it allowed me to spend a penny up to a very spotless degree of accuracy, or else than simply use a beaker or a standard cylinder. However, I did use a step cylinder for repeat results and this did not come out to affect my results. I obtained one rigid of anomalous results. These were obtained for a temperature of 30i C and did not fit in with the general trend. consort to the shell-fit line on my graph, the rate of reaction should bugger off been durable and it should substantiate taken slightly 58 seconds for the Alka-Seltzer tablets to dissolve in water with a temperature of 30i C. A reason for me obtaining this anomalous result could have been due to the fact that whilst the reaction was taking place the 100ml beaker was still in the water bath. This would have caused the temperature to rise lento and slowly increase the rate man the tablets were dissolving, therefore causation more collisions and change magnitude the rate.This did not happen however at higher temperatures, because the temperature of the water bath was about the same, and so it did not really have often effect, and it nevertheless kept the temperature unbroken (i. e. hinderanceped it insurrection or falling). Although I tried my best to make the essay perfect there were some leaded inaccuracies with the investigate. Firstly, when testing lower temperatures, the temperature of the water bath, which was much higher than the actual temperature being tested, caused a rapid increase in the temperature, or if it were lower it would cause it to diminish rapidly, peculiarly when taken gain the Bunsen.These gave us results for faulty temperatures to which were we testing. To dominate this problem, a thermostatic water bath would need to have been used, since it can be grade to a trustworthy temperature, and it will stop when it reaches there. Also it would mean(a) that the solution at bottom it would reach the choose temperature or come together to it. , and not increase or decrease once the water inside it has reached equilibration.Secondly, it was impractical to say when scarce the Alka-Seltzer tablets had completely dissolved and consistently ensconce this for every result obtained. This was a vast flaw in the experiment and abnormal the results in a big way. To overcome this problem a special member of apparatus would be needed to see exactly when they had dissolved each time and give us the same footmark of consistency each time. To improve the whole tone of the results, the same piece of apparatus would have needed to be used passim the whole experiment, and not changed for repeat results.To overcompensate my inquiry and countenance additional evidence for this experiment, I conceive that I could have investigated up to hig her temperatures and see how the link would break down, and how the results would fit in with the trend of results. Also, it would have helped me to see how the decomposing of the dissolved substances change the results. To improve the experiment and make it fair, distilled water should have been used instead of pick apart water because it is purer than badger water and does not contain impurities.