IODINE CLOCK COURSEWORK EXAMPLE

If any chemical splashes on your skin, wash it off immediately. 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. 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. How About Make It Original? This could be due to systematic errors such as the reaction time of the student. Sorry, but copying text is forbidden on this website. 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.

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. Describe any sources of error in your experiment. As seen in the graph there is a positive correlation between the volume Concentration of the potassium iodide and the rate or reaction. There are also random errors such as the change of temperature. Describe ways of improving your experiment in order to reduce the errors you mentioned above.

Solutions Keep the temperature of the room constant by turning coursewoork the aircon before the lab starts, and checking the room temperature as the lab is being done 1 BBC GCSE Bitesize: Starch- Indicator When starch is left in mixture for a long period of time, it starts to degrade and will take longer for the reaction to be seen affect the time taken.

If you need this or any other sample, we can send it to you via email. What is your topic? A series of experiments will be carried out in which only the concentration of the iodide ions will be varied. We will write a custom essay sample on.

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Iodine Clock Reaction: Concentration Effect Essay

Using syringes make up the following mixtures in five dry cm3 beakers. 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. The graph on the trend 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.

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. Describe any sources of error in your experiment.

Both the sulfuric acid and hydrogen peroxide solutions irritate the eyes. Apparatus and Chemicals selection of syringes cm3 glass beakers white tile timer distilled water 1 mol dm? Carefully swirl the reaction mixture in the beaker from time to time.

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. We’ll occasionally send you account related and coudsework emails.

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iodine clock coursework example

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 concentration of the potassium iodide.

Measure 5 cm3 of hydrogen peroxide into a syringe. How About Make It Original? In oidine 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.

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Give a valid conclusion to this experiment with an explanation.

Iodine Clock Reaction: Concentration Effect Essay Example | Graduateway

Courseworj way to make the measurements more precise is to use the same error margins on all instruments thus allowing a constant error margin. As seen in the graph there is a positive correlation between the volume Coursewirk of the potassium iodide and the rate or reaction. Haven’t found the Essay You Want?

We will write a custom essay sample on Iodine Clock Reaction: By clicking “SEND”, you agree to our terms of service and privacy policy. Add it to mixture 1 as quickly as possible and at the same time start the timer.

iodine clock coursework example

This could be due to systematic errors iofine as the reaction time of the student. Repeat steps 2 to 4 with each of the remaining solutions Note: Between every test, the starch used should be a fresh batch or to make sure to preserve the starch used for the experiment. There are also random errors such as the change of temperature.

iodine clock coursework example

courework As seen in the graph, the line of best fit does not successful go through the first point 5,0. When using the syringes always keep them pointing downwards. Sorry, but downloading is forbidden on this website.

Let us create the best one for you! 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.