Iodine Clock Reaction
Investigating the effects of changing concentration: iodine clock reaction.
Abstract
This is an experiment to show the Iodine Clock Reaction. To create a chemical reaction to see how long it takes for solution to change to a dark blue Color. When changing the concentration of the iodide (K1) and adding distill water to make it up to 5cm³ each time. This is to see if the reaction takes less with less concentration or faster with more concentration added to the peroxodisulphatee. So with the solution made with more concentration it means there is more particles reactant knocking about between the water molecules. Making the collisions between the important particles more likely. From the results it shows that more concentration the faster …show more content…
(Society, Society and profile, 2012) This experiment has been designed so people can examine the kinetics of a chemical reaction. It was discovered by Hans Heinrich Landolt in the 19th century and today is one of only few known to science. Factors that affect the rate of a chemical reaction are important to understand due to the importance of many such reactions to our health, well-being and comfort.
British scientist William Lewis invented the Collision theory in 1918 but Max Trautz is known to be the founder of the Collision theory. Trautz issued his work on Collision theory invention in 1916. (Chemistry-online-courses.blogspot.co.uk, 2015)
With the rate of reaction it has been led by the collision theory, so for a reaction to occur there has to be a collision between the reactant molecules. Where the Collison has to have enough energy to be able to break and form the right bonds, but also having the right orientation when colliding. Once this had happened it is then a chemical reaction.
We can increase the rate of reaction when increasing the amount of these pleasing …show more content…
Once the iodine is formed, it reacts to the thiosulfate to form tetrathionate ions. Where it then recycles the iodide ions by the fast reaction:
This reaction can be expressed by: The sulphate ions and both of the reactants are colourless. Being colourless it helps to watch the progress of the reaction, following the colour of the iodine when it is being produced. Putting starch in the reaction mixture, the iodine can be detected even more clearly. With the iodine it forms an intense blue – black complex with the starch.
When adding some thiosulphate ions to the mixture it may make the amount of time taken to produce particular amount of iodine easier to measure because it delays the time that the starch can react with.
The starch turns black in the presence of iodine.
The reaction of thiosulphate which uses up iodine and prevent starch from reacting with it. This reaction can be expressed by: Until the thiosulphate has been used up no starch iodine colour can appear. One a particular amount of iodine has been produced is when there blue colour will
Abstract
This is an experiment to show the Iodine Clock Reaction. To create a chemical reaction to see how long it takes for solution to change to a dark blue Color. When changing the concentration of the iodide (K1) and adding distill water to make it up to 5cm³ each time. This is to see if the reaction takes less with less concentration or faster with more concentration added to the peroxodisulphatee. So with the solution made with more concentration it means there is more particles reactant knocking about between the water molecules. Making the collisions between the important particles more likely. From the results it shows that more concentration the faster …show more content…
(Society, Society and profile, 2012) This experiment has been designed so people can examine the kinetics of a chemical reaction. It was discovered by Hans Heinrich Landolt in the 19th century and today is one of only few known to science. Factors that affect the rate of a chemical reaction are important to understand due to the importance of many such reactions to our health, well-being and comfort.
British scientist William Lewis invented the Collision theory in 1918 but Max Trautz is known to be the founder of the Collision theory. Trautz issued his work on Collision theory invention in 1916. (Chemistry-online-courses.blogspot.co.uk, 2015)
With the rate of reaction it has been led by the collision theory, so for a reaction to occur there has to be a collision between the reactant molecules. Where the Collison has to have enough energy to be able to break and form the right bonds, but also having the right orientation when colliding. Once this had happened it is then a chemical reaction.
We can increase the rate of reaction when increasing the amount of these pleasing …show more content…
Once the iodine is formed, it reacts to the thiosulfate to form tetrathionate ions. Where it then recycles the iodide ions by the fast reaction:
This reaction can be expressed by: The sulphate ions and both of the reactants are colourless. Being colourless it helps to watch the progress of the reaction, following the colour of the iodine when it is being produced. Putting starch in the reaction mixture, the iodine can be detected even more clearly. With the iodine it forms an intense blue – black complex with the starch.
When adding some thiosulphate ions to the mixture it may make the amount of time taken to produce particular amount of iodine easier to measure because it delays the time that the starch can react with.
The starch turns black in the presence of iodine.
The reaction of thiosulphate which uses up iodine and prevent starch from reacting with it. This reaction can be expressed by: Until the thiosulphate has been used up no starch iodine colour can appear. One a particular amount of iodine has been produced is when there blue colour will