RATE OF REACTION BETWEEN SODIUM THIOSULPHATE AND HYDROCHLORIC ACID COURSEWORK

I am going to investigate how varying the concentration of Sodium Thiosulphate affects the rate of reaction with Hydrochloric Acid. If the particles have got more energy they are more likely to overcome the Particles with more energy are more likely to react successfully. When handling hot beakers and measuring cylinders a pair of tongs will be used. 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. I believe that when the most concentrated solution is used the reaction would be at its fastest. The four main variables that affect rate are:

Reaction Rates Chemical Reactions Essays]. However apart from that I don’t think that there is any thing else that I could have done to improve my test results except have had more time to have done the extra set of results that I need to get a wider range of results. Only a small percent result in a reaction. A certain amount of energy is needed to allow a reaction to take place. The RATE of that particular reaction is high. I have chosen the range of temperatures because they give the best range of results. If they have more energy there is greater chances of successful collisions meaning the reaction occurs faster.

Reaction Rates Chemical Reactions Essays]. There are certain factors that can affect the rate of reaction.

Investigating the rate of reaction between sodium thiosulphate and hydrochloric acid

While the acid and thiosulphate solution are heating up I will place a conical flask on to a piece of a card which has a large black cross drawn on its center. I will then place a thermometer into the diluted thiosulphate and place it in to water bath.

I would ideally like to wear an apron to protect the skin and clothing but none are available for use so Rate of reaction between sodium thiosulphate and hydrochloric acid coursework will just have to careful when heating and transferring liquids. The repeat results will help to iron out any anomalies and the average will give a good summary of the results of the experiment. It is a precipitation experiment.

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These are surface area, temperature, concentration and catalysts 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.

Rate of Reaction – Sodium Thiosulphate and Hydrochloric Acid Coursework

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.

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. It is measured by dividing 1 by the time taken for the reaction to take place: I will use the same standard each time for judging when the cross has disappeared. Get feedback on grammar, clarity, concision and logic instantly.

The reaction that takes place is as follows: I am going to investigate the effect of changing rate of reaction between sodium thiosulphate and hydrochloric acid coursework concentration of Sodium Thiosulphate on the rate of the reaction between Hydrochloric Acid and Sodium Thiosulphate.

This collision causes certain bonds to break and new ones to be formed. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction.

In this experiment I have found that as the temperature is increased the time taken for the reaction to take place decreases. Only particles with enough energy to overcome the barrier will react after colliding However if one set of results is entirely different to the other, a third experiment will be performed to replace the anomalous set of results.

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I will look at the solution and when it turns to cloudy to see the cross at the bottom of the conical flask I will stop the stop clock.

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. Only a small percent result in a reaction. The RATE of that particular reaction is high. PLAN A chemical reaction takes place over a specific period of time i. This is due to the energy barrier to overcome.

I will know when the reaction is taking place as the solution turns from clear to opaque. I believe that when the most concentrated solution is used the reaction would be at its fastest.

For a reaction to occur particles have to collide with each other. In a more concentrated solution there are more particles so collisions occur more frequently 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.

I will repeat this process three times for each of my six temperatures.

The above graphs show that rate against temperature has a negative positive correlation, however time against temperature has a negative correlation. The four main variables that affect rate are: In the temperature experiment the average time taken for a reaction to take place decreased was I will then place it in to a pre-heated water bath and place a thermometer into the acid.