The rate at which Alka-Seltzer tablets reacts with water Essay examples

The rate at which Alka-Seltzer tablets fight downs with waterStatement of problemThe aim of the experiment is to find out the rate at whichAlka-Seltzer tablets react with water. The input inconstant that I willchange is temperature. The output variable will be measured by thetime it takes for the Alka-Seltzer tablets to dissolve.Input variablesIn this experiment there argon two main factors that can affect the rateof the reaction. These key factors can change the rate of the reactionby either increasing it or lessen it. These were considered andcontrolled so that they did not disrupt the success of the experiment.Temperature- As the temperature increases, the movements of moleculesalso increase. This is the kinetic theory. When the temperature isincreased the particles gain much energy and therefore move aroundfaster. This gives the particles more of a chance with other particlesand with more force.The increase in temperature will therefore increase the rate ofreaction.As this i s the variable I am measuring stick I will not keep the temperatureconstant and therefore I will be varying it.Volume of water- if the volume of the water is increased there is morelikelihood that there will be more collisions. This is because thereare more water molecules in a given volume to react with theAlka-Seltzer tablets. However if there are sufficient water moleculesto occupy the Alka-Seltzer tablets an increase in the water moleculeswill not alter the rate of the reaction. This is because theAlka-Seltzer tablets are already working as fast as they can to reactwith the water.The concentration can be increased by increasing the volume of thewater utilize in the reaction to dissolve the Alka-Seltzer tablets in.To control the... ... different from what it should be. To solvethis problem a thermostatic water bath could be used as sayabove.* If the stop watch was stopped to early or late, again the overallreading would not be as accurate as it could have been.* It was nearl y impossible to tell when the Alka-Seltzer tablet haddissolved, apiece time the experiment was done. This was a hugeproblem for the experiment as this could have totally causedproblems to the experiment. A circumscribed type of detector apparatus,which bleeped when the correct amount of Alka-Seltzer tabletdissolved, could improve this, each time the experiment was done.This would give us an extra measure of accuracy each time.Another way to improve the experiment and to produce consistentreadings was to used distilled water. This is because the distilledwater contains no impurities and therefore no hardness in water.