IODINE CLOCK COURSEWORK EXAMPLE

As seen in the graph, the line of best fit does not successful go through the first point 5,0. Haven’t found the Essay You Want? Using syringes make up the following mixtures in five dry cm3 beakers. Describe ways of improving your experiment in order to reduce the errors you mentioned above. As the iodine molecules are produced they immediately react with the thiosulfate ions and are converted back to iodide ions:

Sorry, but copying text is forbidden on this website. Carefully swirl the reaction mixture in the beaker from time to time. A way to make the measurements more precise is to use the same error margins on all instruments thus allowing a constant error margin. Describe ways of improving your experiment in order to reduce the errors you mentioned above. 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. 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:

Couursework 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.

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.

Plot a graph of rate against volume of potassium iodide.

Let me help you. Let us create the best one for you! Haven’t found the Essay You Want? We will write a custom essay sample on Iodin Clock Reaction: By clicking “SEND”, you agree to our terms of service and privacy policy.

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The aim of this experiment is to find the effect iodinw varying the concentration of iodide ions on the rate of reaction between hydrogen peroxide and an acidified solution of potassium iodide.

iodine clock coursework example

A way to make the measurements more precise is to use the same error margins on all instruments thus allowing a constant error margin. Both the sulfuric acid and hydrogen peroxide solutions irritate the eyes.

Describe any sources of error in your experiment.

Iodine Clock Reaction: Concentration Effect Essay

Sorry, but copying text is forbidden on this website. Repeat steps 2 to 4 with each of the remaining solutions Note: How About Make It Original? We will write a custom essay sample on. When using the syringes always keep them pointing downwards.

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. Measure 5 cm3 of hydrogen peroxide into a syringe. We’ll occasionally send you account related and promo emails.

iodine clock coursework example

The stirring motion was not kept constant and affects the time it takes for the potassium iodide to react with colck thiosulphate as the rate of reaction would increase when the swirling motion is quick. Eric from Graduateway Hi there, would you like to get an essay? This could be due to systematic errors such as the reaction time of the student.

During the lab, the temperature of the room increased resulting in a faster reaction changing coursewkrk correlation between the rate coursewrok reaction and the volume usage. Between every test, the starch used should be a fresh batch or to make sure to preserve the starch used for the experiment. 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.

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Place the beaker containing the mixture 1 on the white tile. Error Change in Temperature Problem The room temperature increased as the lab was conducted affecting the lab speeding up the ckock when the temperature increased. Describe ways of improving your experiment in order to reduce the errors you mentioned above.

Iodine Clock Reaction: Concentration Effect Essay Example | Graduateway

Add it to mixture 1 as quickly as possible and at the same time start the timer. Overall, these systematics and random errors do not influence the majority of the lab result as it continues to coursewor, up the collision theory and highlights the relationship between the rate of reaction and the concentration of the potassium iodide.

Sorry, but downloading is forbidden on this website. What is your topic? Apparatus and Chemicals selection of syringes cm3 glass beakers white tile timer distilled water 1 mol dm? If you need this or any other sample, we can send it to you via coursewoek.

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