• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigating the effect of temperature on the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid.

Extracts from this document...


Chemistry Coursework - Investigating the effect of temperature on the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid PLAN The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. There are five factors which affect the rate of a reaction, according to the collision theory of reacting particles: temperature, concentration (of solution), pressure (in gases), surface are (of solid reactants), and catalysts. I have to investigate the effect temperature has on a reaction. Aim: To see the effects of a change in temperature on the rate of a reaction. The reaction that will occur is: Sodium Thiosulphate + Hydrochloric Acid Sodium Chloride + Sulphur + Sulphur Dioxide + Water A diagram to show what will happen when the reaction takes place. One experiment will be carried out involving changing the temperature (while everything else remains constant). The hydrochloric acid will be maintained at room temperature, and the temperature of the Thiosulphate will be varied to the necessary temperatures using both a Bunsen burner and ice. I decided which temperatures and concentration to use during my preliminary series of experiments. ...read more.


The results shown, however, in the previous table were the correct ones with the new-recorded rates of reactions and times. ANALYSING THE DATA Conclusion: From the results it is possible to observe that as the temperature is increased the time taken for the reaction to take place decreases. This means that the rate of reaction increases as it takes less time for the reaction to take place. In the 'time' graph (the graph showing temperature against time) the points have negative correlation. The graph, however, that shows temperature against rate of reaction has positive correlation - as the temperature increases so does the rate of reaction. This is because when the temperature is increased the particles will have more energy and this move faster. Therefore they will collide more often and with more energy. Particles with more energy are more likely to overcome the activation energy barrier to reaction and thus react successfully. Comparison: The conclusion that I have been able to draw from this experiment strongly agrees with the prediction that I made before starting the experiment in my plan. They both say that as the temperature increases, so does the rate of reaction. ...read more.


I would be even clearer about when the reaction was done, as this would also improve the accuracy of the experiment and the fairness of each trial. Possible Extensions: To expand the experiment there are certainly things that I could add and employ to make the experiment more constructive and also more explanatory on the effects of different variables on the rate of reaction. I could perhaps investigate the effect on stirring on the rate of reaction as well. After all, stirring the mixture is an important rate factor. I could also investigate the effect of surface area on the rate of reaction. I could test my hypothesis that id a solid reactant is broken down into smaller pieces the rate of reaction increases. Another experiment I could do in order to expand this experiment is the effect of concentration on the rate of reaction, or even the effect of pressure. I could also try the experiment with different acids to see if they also made a difference and to see whether or not there was a reaction with them at all, and if so what it was. I could also use more accurate equipment so that better results and more evidential, solid results could be obtained. Bunsen Burners are not brilliant for achieving certain temperatures. 2002 Rebecca Jordan Chemistry Coursework ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Patterns of Behaviour essays

  1. The effects of temperature on the rate of reaction ofsodium thiosulphate with hydrochloric acid.

    The stopwatch was then stopped when the black cross could no longer be seen because the products had become opaque due to a precipitate of sulphur being produced. Diagram Results Temperature (�C) Time Taken In 1st Reaction (s) Time Taken In 2nd Reaction (s) Time Taken In 3rd Reaction (s)

  2. investigate the effects of temperature on the reaction between sodium thiosulphate and hydrochloric acid.

    Opinion of plan: In my opinion, I think that my plan was completed well and that all the factors were controlled as well as possible. Obviously, all our results weren't as accurate as they could be due to the fact that we were experimenting in a science lab but they were as precise as possible.

  1. Free essay

    Close Your Eyes

    I couldn't believe I'd hurt such a beautiful girl. My beautiful girl. "Your right" I said "I was acting like a jealous twat and I'm sorry. I guess I was just afraid of losing you." She relaxed a little. Her grip on the breakfast bar loosened and a single tear rolled down her cheek.

  2. Coursework: Effect of Temperature on the Rate of Reaction between

    with another, it can only be done if the atoms are close enough to share the electrons. Once the particles collide to produce a product, they are known as effective collisions. This can only happen with great speed, energy and force so it can break down the bonds in the molecules.

  1. Investigating the effect of temperature on the rate of reaction of sodium thiosulphate and ...

    I will use the concentration 20ml / 30ml (20ml being the sodium thiosulphate and 30ml being water). The acid will not be heated. I will use five different temperatures, 20�c, 30�c, 40�c, 50�c and 60�c to obtain a large enough range of measurements.

  2. Sodium thiosulphate and hydrochloric acid Investigating how the rate of reaction is affected ...

    There is anomalousness result; I think this might have been cause as my group and I Complete the experiment in two different day. This may have changed the atmosphere of the room. The reaction between Hydrochloric acid and Sodium Thiosulphate When dilute hydrochloric acid is added to sodium thiosulphate solution, a fine deposit of sulphur is formed.

  1. The effect of temperature on the rate of reaction

    � Volume of hydrochloric acid. � Concentration of hydrochloric acid solution. � Volume of sodium thiosulphate. � Concentration of sodium thiosulphate solution. � The cross. � The time taken for the cross to disappear. � The temperature of the mixture (sodium thiosulphate and hydrochloric acid).

  2. How does the Temperature affect the Rate of Reaction between Sodium Thiosulphate and Acid?

    The experiment was done for all the temperatures not just 30oC, 40oC and 50oC. It was done for 20oC and also 60oC. 2) The procedure was repeated once for all of the temperature ranges to ensure the maximum reliability. Table of results to show the time taken for the cross

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work