IODINE CLOCK COURSEWORK EXAMPLE

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. 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. 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. 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. Haven’t found the Essay You Want? Measure 5 cm3 of hydrogen peroxide into a syringe.

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. Place the beaker containing the mixture 1 on the white tile. 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. 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. We will write a custom essay sample on. By clicking “SEND”, you agree to our terms of service and privacy policy.

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Describe ways of improving your experiment in order to reduce the errors you mentioned above. As seen in the graph there is a positive correlation between the volume Concentration of the potassium iodide and the rate or reaction.

Iodine Clock Reaction: Concentration Effect Essay Example | Graduateway

Sorry, but copying text is forbidden on this website. A way to make the measurements more precise is to use the same error margins on all instruments thus allowing a constant error margin.

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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. There are also random errors such as the change of temperature. If you need this or any other sample, we can send it to you via email. Sorry, but downloading is forbidden on this website.

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. 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.

We will write a custom essay sample on Iodine Clock Reaction: 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.

Iodine Clock Reaction: Concentration Effect Essay

If any chemical splashes on your skin, wash it off immediately. We’ll occasionally send you account related and promo emails. Measurement Since it is not possible to eliminate the error margins of an instrument, exampl would be wiser to increase the precision of the instrument instead.

iodine clock coursework example

Repeat coursewrok 2 to 4 with each of the remaining solutions Note: Using syringes make up the following mixtures in five dry cm3 beakers.

Apparatus and Chemicals selection of syringes cm3 glass beakers white tile timer distilled water 1 mol dm? By clicking “SEND”, you agree to our terms of service and privacy policy. 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.

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When using the syringes always keep them pointing downwards. 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.

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. This could be due to systematic errors such as the reaction time of the student. Coursswork 5 cm3 of hydrogen peroxide into a syringe. There is no possible exampe 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.

As seen in the graph, the ioodine of best fit does not successful go through the first point 5,0. We will write a custom essay sample iodinee.

iodine clock coursework example

Between every test, the starch used should be a fresh batch or to make sure to preserve the starch used for the experiment. What is your topic? Let us create the best one for you!

A series of experiments will be carried out in which only the concentration of the iodide ions will be varied. Carefully swirl the reaction mixture in the beaker from time to time.

Eric from Graduateway Hi there, would you like to get an essay? Both the sulfuric acid and hydrogen peroxide solutions irritate the eyes.

iodine clock coursework example

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