RATE OF REACTION BETWEEN SODIUM THIOSULPHATE AND HYDROCHLORIC ACID COURSEWORK

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I will know when the reaction is taking place as the solution turns from clear to opaque. If the particles have got more energy they are more likely to overcome the Particles with more energy are more likely to react successfully. If the reactants take a relatively short time to form the products, the reaction is known as a FAST one. For a reaction to occur particles have to collide with each other. Reaction Between Hydrochloric Acid and Sodium Thiosulphate Essay – Reaction Between Hydrochloric Acid and Sodium Thiosulphate Introduction I will be conducting two experiments to determine how two factors affect the rate of reaction in the reaction between hydrochloric acid and sodium thiosulphate. Only particles with enough energy to overcome the barrier will react after colliding Using my preliminary experiments I decided on using the following apparatus:

This is because when the temperature is increased the particles have more energy and therefore move faster, meaning that the will collide more often with more energy. This means that the graphs drawn up in my analysis will have positive correlation, and will probably be curved as the increase in rate of reaction will not be exactly the same as the temperature is increased. They will therefore collide more often and with more energy. Investigating the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid – Investigating the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid I predict that the higher the concentration then the faster the reaction, this is because when water is added the sodium thiosulphate solution and the hydrochloric acid have a more neutral pH and it becomes more dilute then it will be less reactive will the other particles in the solution. This is due to the energy barrier to overcome.

This collision causes certain bonds to break and new ones to be formed.

I would ideally like to wear an apron to protect the skin and clothing but none are available for use so I will just have to careful when heating and transferring liquids. However if one set of results is entirely different to the other, rate of reaction between sodium thiosulphate and hydrochloric acid coursework third experiment will be performed to replace the anomalous set of results. The four main variables that affect rate are: This is due to the energy barrier to overcome.

PLAN A chemical reaction takes place over a specific period of time i. I am going to investigate the effect of changing the concentration of Sodium Thiosulphate on the rate of the reaction between Hydrochloric Acid and Sodium Thiosulphate. For a reaction to occur particles have to collide with each other. I predict that as the concentration of the Sodium Thiosulphate doubles, the rate of the reaction will double.

I will also investigate if there will be a change in temperature after the reaction has occurred. During the heating stage of the experiment, I will be as accurate as I can using the equipment available to me, however the water baths have a margin of error in using them as it will be human judgment which read the thermometer.

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In the temperature experiment the average time taken for a reaction to take place decreased was I will repeat this process three times for each of my six temperatures. I am going to investigate how varying the concentration of Sodium Thiosulphate affects the rate of reaction with Rate of reaction between sodium thiosulphate and hydrochloric acid coursework Acid.

The above graphs show that rate against temperature has a negative positive correlation, however time against temperature has a negative correlation. This means that as the rate of reaction increasers the time taken rate of reaction between sodium thiosulphate and hydrochloric acid coursework the reaction is decreased, this means that more reactions can take place in a shorter time.

These are surface area, temperature, concentration and catalysts The reaction that takes place is as follows: Sodium Thiosulphate and Hydrochloric Acid Reaction Investigation Essay – Sodium Thiosulphate and Hydrochloric Acid Reaction Investigation Aim To see the effects of concentration on the rate of a reaction between sodium thiosulphate and hydrochloric acid.

There aren’t any obvious anomalous results in my graphs so therefore I believe that my results do support my prediction. I will know when the reaction is taking place as the solution turns from clear to opaque. If they have more energy there is greater chances of successful collisions meaning the reaction occurs faster.

Equation for my experiment: Reaction Between Hydrochloric Acid and Sodium Thiosulphate Essay – Reaction Between Hydrochloric Acid and Sodium Thiosulphate Introduction I will be conducting two experiments to determine how two factors affect the rate of reaction in the reaction between hydrochloric acid and sodium thiosulphate. This is because when the temperature is increased the particles have more energy and therefore move faster, meaning that the will collide more often with more energy.

I will then place it in to a pre-heated water bath and place a thermometer into the acid.

I have chosen the range of temperatures because they give the best range of results. Particles with more energy are more likely to react successfully.

A certain amount of energy is needed to allow a reaction to take place. All of these precautions will make my final results more reliable and keep anomalies at a minimum so therefore make the entire investigation more successful.

Repeat results and averages will be taken to improve the credibility of the findings, and present solid grounding for the final conclusion. I will pour them into the conical flask and start the stop clock. It is measured by dividing 1 by the time taken for the reaction to take place: The equation for the reaction is: Rate of reaction between sodium thiosulphate and hydrochloric acid coursework the other hand, a reaction which takes a longer time is known as a SLOW reaction, and as a result is known to have a LOW rate of reaction If the reactants take a relatively short time to form the products, the reaction is known as a FAST one.

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I will then place a thermometer into the diluted thiosulphate and place it in to water bath. It is a precipitation experiment. I will use the same standard each time for judging when the rate of reaction between sodium thiosulphate and hydrochloric acid coursework has disappeared.

They will therefore collide more often and with more energy. Using my preliminary experiments I decided on using the following apparatus: This can be justified by relating to the collision theory; when the temperature is increased the particles will have more energy and therefore move faster.

Had I done this experiment again I would have used a Bunsen burner instead of a water bath as it is more accurate to get the temperatures that I would have wished. I believe that when the most concentrated solution is used the reaction would be at its fastest.

Investigating the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid – Investigating the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid I predict that the higher the concentration then the faster the reaction, this is because when water is added the sodium thiosulphate solution and the hydrochloric acid have a more neutral pH and it becomes more dilute then it will be less reactive will the rate of reaction between sodium thiosulphate and hydrochloric acid coursework particles in the solution.

If the particles have got more energy they are more likely to overcome the Particles with more energy are more likely to react successfully. In this experiment I have found that as the temperature is increased the time taken for the reaction to take place decreases. Reaction Rates Chemical Reactions Essays].

Investigating the rate of reaction between sodium thiosulphate and hydrochloric acid

This means that the graphs drawn up in my analysis will have positive correlation, and will probably be curved as the increase in rate of reaction will not be exactly the same as the temperature is increased. This is because as you increase the temperature the rate of reaction increases meaning that it takes less time for each reaction to take place.

In a more concentrated solution there are more particles so collisions occur more frequently Get feedback on grammar, clarity, concision and logic instantly.