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

To Investigate One Factor That Will Affect the Rate of Decomposition of Hydrogen Peroxide.

Extracts from this document...

Introduction

INVESTIGATION OF THE Aim: to investigate one factor that will affect the rate of decomposition of hydrogen peroxide. The equation for this reaction is;~ Hydrogen peroxide -----------------------> oxygen + water 2H O -----------------------> O + 2H O Rate of reaction means the time in which the reaction takes place. Key factors that may affect this reaction are temperature, pressure, surface area, light, concentration, type of catalyst or amount of catalyst. The factor that I will investigate, will be the amount of catalyst. Prediction: I predict that when the catalyst (Maganese IV Oxide) is added to the hydrogen peroxide, small bubbles of oxygen will appear in seconds. They will then collect in the gas syringe, therefore making it expand. If I were to double the amount of catalyst then the rate of reaction would also double as a result. Hypothesis: The theory behind my prediction is that the catalyst decomposes the hydrogen peroxide at a faster rate than if the catalyst was not added at all. ...read more.

Middle

Next I will measure 5cm of hydrogen peroxide, using the pipette I will squeeze it into the measuring cylinder. Making sure that the cylinder is flat on the lab bench to ensure that the readings are precise. I will then measure x amount of catalyst on the balance. I will then take the bung from the beaker, pour in the hydrogen peroxide and add the catalyst. Immediately I will replace the bung and start the stop clock. I will then record the reading of oxygen in the syringe every 15 seconds, until the reaction has stopped. In between these readings I will twist the syringe gently to prevent sticking. I will use these different amounts of catalyst; 0.1g 0.2g 0.3g 0.4g 0.5g I will also rinse the beaker out after each experiment, and make sure that it is completely dry, before the next experiment. I will repeat each experiment twice. Risk assessment: It is important that I wear goggles throughout each experiment as a safety precaution, so that I do get any chemicals into my eyes. ...read more.

Conclusion

This would have also probably prevented any anomalous results that I gained. As they were not I have considered that there may have been a change in temperature which could have distorted my results. To improve my method could measure the room temperature a make sure that it remained the same throughout the experiment. Otherwise I would consider my method as being accurate and quite a sound method to use again if necessary. This is the only change I would make to my method. I feel that my results are a good source to prove my hypothesis as the reaction of the hydrogen peroxide does speed up due to the catalyst. I feel that they could be made more reliable if I have controlled the environment further by keeping the temperature the same. Another experiment that I could do to back up my conclusions would be to measure the volume of gas by collection over water. I would do this with a measuring cylinder (to collect the oxygen), a trough filled with water, an airtight beaker and a delivery tube to connect the two. See Diagram below............ ?? ?? ?? ?? Elisabeth Padberg 10BR Elisabeth Padberg 10BR Elisabeth Padberg 10BR ...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. Investigation of the effect of the concentration of hydrogen peroxide on the rate of ...

    However this does not change the amount of gas evolved over a long time as no matter how concentrated the mixture is after a long period of time it will have all reacted and overall will have produced the same amount of gas due to similar volume of the two mixtures.

  2. Factors Affecting the Rate of Catalytic Decomposition of Hydrogen Peroxide.

    Time taken (s) 18 10.9 Inference: there is not enough volume as it reaches the maximum amount of gas too quickly, but there is too much catalyst Concentration: 16 VOL Volume: 10cm3 Catalyst: 1g Volume of gas collected (cm3) Time taken (s)

  1. Studying the rate of reaction of the catalyst decomposition of hydrogen peroxide.

    This was what I predicted in my prediction. Whilst we were working out our average time we used the times from each repeat because there were no anomalies that we had to miss out. The reason I think why the hydrogen peroxide with a concentration of 100% was quicker than the 0% concentration, was because it was 100%

  2. Magnesium Oxide

    A way in which we could avoid this from having an effect on our results could be by isolating the room during the time we take in the results so that there would be minimal vibrations travelling through the table and floor.

  1. Free essay

    Close Your Eyes

    Walk as slowly as possibly without making it obvious. I thought to myself. *Danny* She seemed a little nervous and on edge. Maybe it was because she was new or maybe it was because she had just bumped into me. Whatever it was, it was awkward. "So where have you moved from?"

  2. Investigation of a Factor Affecting the Rate of Hydrogen Peroxide Decomposition

    Half fill the bucket with water. 3. Fill the 50mL measuring cylinder with water, cover the end and invert into the water. Make sure that the end of the inverted measuring cylinder is in the water in the bucket so that it cannot come out.

  1. 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.

  2. To investigate one factor that will affect the rate of decomposition of hydrogen peroxide.

    The reaction is at its fastest at the start, when the concentration of hydrogen peroxide in solution is high before any has been used up. The graph gradually flattens out. This is because, as the hydrogen peroxide is used up, its concentration falls.

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