Sorry, but copying text is forbidden on this website. This could be due to systematic errors such as the reaction time of the student. What is your topic? Repeat steps 2 to 4 with each of the remaining solutions Note: When using the syringes always keep them pointing downwards. Haven’t found the Essay You Want? How About Make It Original?
Describe ways of improving your experiment in order to reduce the errors you mentioned above. If there is too much of the concentration added to the mixture, the rate of reaction will be faster and if too little of the potassium iodide is added, it reacts at a slower place.
Give a valid conclusion to this experiment with an explanation. Overall, these systematics and random eaxmple do not influence the majority of the lab result as it continues to back up the collision theory and highlights the relationship between the rate of reaction and the concentration of the potassium iodide. Measurement Since it is not possible to eliminate the error margins of an instrument, it would be wiser to increase the precision of the instrument instead.
Iodine Clock Reaction: Concentration Effect Essay Example | Graduateway
We will write a custom essay sample on. A series of experiments will be ioine out in which only the concentration of the iodide ions will be varied. Voursework steps 2 to 4 with each of the remaining solutions Note: Eric from Graduateway Hi there, would you like to get an essay? As seen in the graph there is a positive correlation between the volume Concentration of the potassium iodide and the rate or reaction.
A way to make the measurements more precise is to use the same error margins on all instruments thus allowing a constant error margin.
If any chemical splashes on your skin, wash it off immediately. Measure 5 cm3 of hydrogen peroxide into a syringe.
Solutions Keep the temperature of the room constant by turning of the aircon before the lab starts, and checking the room temperature as the lab is being done 1 BBC GCSE Bitesize: Both the sulfuric acid and hydrogen peroxide solutions irritate the eyes. Exzmple the beaker containing the mixture 1 on the white tile.
Stirring Swirling motion Keep constant of the stirring motion, by using a magnetic stirring rod when the potassium iodide is added so it does not affect the rate of reaction. How About Make It Original? There is no possible way to change the speed of reaction as it is a human flaw, therefore using a more precise instrument will be more appropriate for the lab. exxample
As seen in the graph, the line of best fit does not successful go through the first point 5,0. This could be due to systematic errors such as the reaction time of the student. Sorry, but copying text is forbidden on this website.
During the lab, the temperature of the room increased resulting in a faster reaction changing the correlation between the rate of reaction and the volume usage. What is your topic?
Carefully swirl the reaction mixture in the beaker from time to time. We’ll occasionally send you account related and promo emails.
The stirring motion was not kept constant and affects the time it iodinw for the potassium iodide to react with sodium thiosulphate as the rate of reaction would increase when the swirling motion is quick. Haven’t found the Essay You Want? We will write a custom essay sample on Iodine Clock Reaction: Using syringes make up the following mixtures in five dry cm3 beakers.
Iodine Clock Reaction: Concentration Effect Essay
Apparatus and Chemicals selection of syringes cm3 glass beakers white tile timer distilled water 1 mol dm? This result is backs up examlpe collision theory1 that states in order to show a positive increase in the rate of reaction, the amount of collision must also increase. In order to to increase to amount of collision, having more volume of potassium iodide increasing the concentration there is more chance of collision resulting in a faster rate of reaction.
Describe any sources of error in your experiment. As the iodine molecules are produced they immediately react with the thiosulfate ions and are converted back to iodide ions: The aim of this experiment is to find the effect of varying the concentration of iodide ions on the rate of reaction between hydrogen peroxide and an acidified solution of potassium iodide.