• 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. The aim of this coursework is to investigate how the temperature can affect the ...

    It also helps me to plan for my final investigation. Enable for me to investigate the effect of temperature on the rates of reaction I will heat the sodium thiosulphate to the temperatures planed, then place it on a piece of paper with a cross drawn in the middle, add

  2. Enzyme Investigation.

    The enzymes work best at their optimum temperature. In humans his is 37oC. The enzymes will be dormant at a temperature below the optimum temperature and would not be able to work. If the enzyme is kept higher than its optimum temperature then it would denature.

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

    - Swallowing hydrochloric acid can cause immediate pain and burns of the mouth, throat, oesophagus and gastrointestinal tract. May also cause nausea, vomiting or diarrhoea. Swallowing may be fatal. - Can cause redness, pain, and severe skin burns. Concentrated solutions cause deep ulcers and discolour skin.

  2. 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.

  1. 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

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

    The acid particles are randomly moving in the water. As you increase the concentration of the acid, therefore there are more acid particles in the same volume. The frequency of collisions between the two reactants increase, therefore the rate of reaction increases. The factor I'm going to considered in investigate and observe is how temperature affects the rate of a reaction.

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

    If a bond is made energy is used up. An exothermic reaction means that there are more bonds broken than there are made, will results in heat energy being given out. This exothermic reaction means that the temperature will affect the results, as heat is being generated when the reactants are reacting.

  2. Investigating how the concentration of reactants affects the rate of reaction.

    In dilute acid, there are not many acid particles, so there is less chance of an acid particle hitting a magnesium atom. I also predict that the 0.6M dilution will have a rate of reaction half the velocity of the 1.0M solution because the amount of hydrochloric acid has decreased

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