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

In this investigation we will be trying to find out whether the temperature of the reactants affects the final reaction. In this investigation we will be using Sodium Thiosulphate and Hydrochloric Acid

Extracts from this document...

Introduction

Rates Of Reaction Introduction: In this investigation we will be trying to find out whether the temperature of the reactants affects the final reaction. In this investigation we will be using Sodium Thiosulphate and Hydrochloric Acid. We will be testing to see how quickly the products of the reaction turn opaque. To establish the opacity we will place the conical flask on a big black "X" mark on a piece of paper. We will be timing (with a stopwatch) to see how long it takes after mixing the reactants until we cannot see the X mark on the paper. Aim: The primary and only aim of this experiment is to establish whether or not the temperature of the reactants in a reaction affects the speed of the reaction. Prediction: I predict that a reaction taken place with reactants at a higher temperature will result in a faster reaction. Hypothesis: This is because the molecules in the 2 reactants will react themselves but at a higher temperature they are moving around faster and harder so a reaction is more likely to happen. ...read more.

Middle

* The same piece of paper with the "X" mark will be used throughout the experiment. * The reactants should be in a constant concentration throughout the experiment; as a higher concentration will yield different results. * Timing should be initiated as soon as the entire measuring cylinders are emptied into the flask; this way we will only start the procedure as soon as the all the preliminary steps are completed; such as emptying all the contents of the beakers. * Ensure the flask/beaker are both free from contamination. This means that other substances are not present in the apparatus prior to the experiment. This way we will gain the purest results from the chemicals; not the results of the contaminants as well! * There should only be one person assigned the task of looking at the "X" mark on the paper and waiting to see if it has disappeared or not; this is because different person have different depths of perception. * Use an electrical means of timing. For this experiment a stopwatch will be used. ...read more.

Conclusion

If I was given more time then I would have repeated this experiment. If I had any anomalies sticking out then I would first repeat that section of the experiment then I would try and find out why it happened to further my learning. Despite my results were not as good as they could have been I think they were enough to show that temperature does indeed affect the rate of reaction. I can also carry out a further investigation to find out whether concentration effects the rate of reaction: Aim: To find out whether the concentration of the reactants affects the rate of reaction. Prediction: I am predicting that a reaction with a higher concentration of reactants will react much quicker compared to a reaction where there is a lower concentration of reactants. Hypothesis The concentration of the reactants determine how much of the particles are there to collide; hence making the reaction take place quicker. A higher concentration results in more particles moving around hence the probability of a successful reaction is much higher. High Concentration Low Concentration Method: ?? ?? ?? ?? 1 Kamran Ali 11.1 Rates Of Reaction 1 Kamran Ali 11.1 Rates Of Reaction ...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. Find out how the concentration of the reactants affects the rate of reaction between ...

    I will mark one of the 25mls measuring cylinders with a 'T' so that when I come to measure the chemicals I know which measuring cylinder is for measuring the sodium Thiosulphate because it has a 'T' on it. I will also know which measuring cylinder is for measuring the

  2. In this investigation I am trying to find out how the concentration of sodium ...

    We did the experiment 3 times- once on green paper, once on white paper and once on pink paper. We poured 30cm� of sodium thiosulphate and 20cm� of water into a conical flask. We did the test 5 times on each coloured paper and each time we did it we

  1. Investigation exploring rates of reaction, using the reaction between sodium thiosulphate and hydrochloric acid ...

    by evaporating off most of the water in them. Task: To find out what factors affect the rate of reaction between sodium thiosulphate and hydrochloric acid. Variables Temperature of environment Concentration of hydrochloric acid Concentration of 'hypo' (sodium thiosulphate) Volumes of reactants When hydrochloric acid is added to a solution

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

    This is because of the collision theory, as said in my Scientific Knowledge, stating that with sufficient activation energy and collisions, reaction will occur. I will use my preliminary test to support my prediction. Preliminary test: The reaction taking place is sodium thiosulphate with hydrochloric acid in different temperatures.

  1. Rate of reaction investigation

    For my preliminary experiment I used the method as shown at the beginning of this course work but I only recorded the time that it took for 100cm3 of gas to be produced. This is because it gave me an idea of how long I would have to take a full set of results.

  2. Investigation to find out how temperature affects the rate of reaction

    In the graph below you can see that there is a bigger temperature difference at 5cm� as the coordinates are further apart, to overcome this problem of the exothermic reaction affecting results we need a concentration of HCl that generates the least amount of heat.

  1. The purpose of this investigation is to find out the different factors which, affects ...

    When the temperature increases, the molecules gain energy and they collide together faster and harder. This energy is needed to break the existing bonds so that the particles are free to make new bonds. The higher the temperature, the higher the average speed increases, so a larger proportion of the collisions transfer sufficient energy for the particles to react.

  2. Investigation to find out how temperature affects the rate of reaction between Sodium Thiosulphate ...

    In this investigation Na[2]S[2]0[3 ]particles only react with the HCl particles. As you increase the concentration of HCl particles there are more acid particles in the same volume. Therefore this means that there is a greater probability of acid particles colliding with Na[2]S[2]0[3 ]particles, which results in an increase in the rate of reaction.

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