IODINE CLOCK COURSEWORK EXAMPLE

  • June 30, 2019

By clicking “SEND”, you agree to our terms of service and privacy policy. As seen in the graph there is a positive correlation between the volume Concentration of the potassium iodide and the rate or reaction. Between every test, the starch used should be a fresh batch or to make sure to preserve the starch used for the experiment. If any chemical splashes on your skin, wash it off immediately. When using the syringes always keep them pointing downwards. Place the beaker containing the mixture 1 on the white tile.

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: If you need this or any other sample, we can send it to you via email. Haven’t found the Essay You Want? Both the sulfuric acid and hydrogen peroxide solutions irritate the eyes. The stirring motion was not kept constant and affects the time it takes for the potassium iodide to react with sodium thiosulphate as the rate of reaction would increase when the swirling motion is quick. Place the beaker containing the mixture 1 on the white tile.

Haven’t found the Essay You Want? The stirring motion was not kept constant and affects the time it takes for the potassium iodide to react with sodium thiosulphate as the rate of reaction would increase when the swirling motion is quick. As seen in the graph, the line of best fit does not successful go through the first point 5,0. Let me help you. Plot a graph of rate against volume of potassium iodide. We will write a custom essay sample on. Measure 5 cm3 of hydrogen peroxide into a syringe.

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Iodine Clock Reaction: Concentration Effect Essay

Describe ways of improving your experiment in order to iodije the errors you mentioned above. When using the syringes always keep them pointing downwards.

As seen in the graph there is a positive correlation between the volume Concentration of the potassium iodide and the rate or reaction. If you need this or any other sample, we can send it to you via email.

Iodine Clock Reaction: Concentration Effect Essay Example | Graduateway

Place the beaker containing the mixture 1 on the white tile. There are also random errors such as the change of temperature. 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.

Repeat steps 2 to 4 with each of the remaining solutions Note: 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. If there is too cloc, 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.

iodine clock coursework example

Error Change in Temperature Problem The room temperature increased as the lab was conducted affecting the lab speeding up the reaction when the temperature increased. 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.

As the iodine molecules are produced they immediately react with the thiosulfate ions clcok are converted back to iodide ions: Between every test, the starch used should be a fresh batch or to make sure to preserve the starch used for the experiment. Give a valid conclusion to this experiment with an explanation. Add it to mixture 1 as quickly as possible and at the same time start the timer.

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Carefully swirl the reaction mixture in the beaker from time ildine time. Using syringes make up the following mixtures in five courseworl cm3 beakers. Overall, these systematics and random errors 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 edample of the potassium iodide.

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This result is backs up the collision theory1 that states in order to show a positive increase in the rate of reaction, the amount of collision must also increase.

A series of experiments will be carried out in which only the concentration of the iodide ions will be varied. Let us create the best one for you!

Sorry, but downloading is forbidden on this website. The graph on the clofk line shows a linear correlation showing that the increase amount of volume of potassium iodide added to the mixture will increase the rate of reaction. If any chemical splashes on your skin, wash it off immediately. Describe any sources of error in your experiment.

iodine clock coursework example