• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5
6. 6
6

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

Extracts from this document...

Introduction

Studying the rate of reaction of the catalyst decomposition of hydrogen peroxide. AIM: The aim of this experiment is to find out if the concentration of the hydrogen peroxide affects the rate of reaction between hydrogen peroxide and the manganese dioxide (catalyst). VARIABLES: There will be several variables in this experiment. A variable is something that will affect the outcome of an experiment. The first being the volume of the hydrogen peroxide which will 20ml. The next variable is surface are of the catalyst, the most accurate way of trying to make the surface area very similar was weighing each amount, the reason why we could not check the surface area was because there were hundreds of small grains. The next variable was the temp; this was room temperature which will be about 21 degrees. The next variable was the mass of catalyst which was 0.1 grams. FAIR TEST: To make sure this was a fair test I had to make sure that all the variables were kept the same for each experiment, apart from the concentration of the hydrogen peroxide. All the experiments will be set up the same way each time to make sure that the results are as accurate as possible. ...read more.

Middle

We will then put the hydrogen peroxide in the conical flask and as quickly as possible we will put the bung on the conical flask. 6. As soon as the hydrogen peroxide has been put in the conical flask then we will start the stop clock. When 30 cm3 has been displaced then we will stop the clock. 7. Once the experiment has finished we will record the time it took on to a table, and from that we will be able to work the average time. Prediction: Using scientific knowledge I can predict several things. The first being that I believe in 0% concentration nothing will happen because the is no hydrogen peroxide to react with, therefore the hydrogen peroxide will not be able to displace the catalyst. Because I think this I am able to predict that the fastest reaction will be with 100%, I can back this up with scientific knowledge by saying that because it is a higher concentration then, there will be less molecules for the catalyst to react with causing the reaction to take place quicker because there will be more collisions. ...read more.

Conclusion

This is what I said in my prediction. This is because more concentrated solutions of Hydrogen peroxide have more hydrogen peroxide molecules. Because there are more molecules, more collisions occur between these and the catalyst, manganese oxide. This produces more reactions than in a lower concentration in a certain amount of time. A collision is just that, because of kinetic energy, molecules move around in liquids and gases. As the molecules move they collide. Evaluation: I think that my experiment went very well. There were no anomalies, and there were no accidents whilst the experiment was being carried out. Like in most experiment there were several things we could have improved on. The first being the most obvious, by the time the bung has been put on the conical flask the reaction will of already started this would of meant that our recordings were not entirely accurate. But I don not know of any ideas to solving this problem. I also think that the measuring devices could be improved because the scales were not very accurate. The other in accurate part of the experiment knew when the reaction had displaced 30cm3 of air because it was difficult to read off the burette. ASHWIN BHOOBUN DENSON 10E ...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

# Related GCSE Patterns of Behaviour essays

1. ## The Effect of Catalase in the Breakdown of Hydrogen Peroxide

If the results are recorded a couple of seconds after they are supposed to, the solution would have a longer amount of time to react, therefore; the results would become unfair. Hence the reason to have another person to assist during the reaction process.

2. ## Investigation of the effect of the concentration of hydrogen peroxide on the rate of ...

Oxide has been added to make sure that all the Manganese Oxide has been deposited. * Also I will use two measuring cylinders instead of one, for not only more accuracy but also to not have to pour away the mixture if I add too much of one substance.

1. ## The effect of changing the concentration of the Enzyme catalyst on the Rate of ...

This will increase the rate of reaction. Variables Input variable - Concentration of enzyme, the amount of food; liver, potato, pea. Output variable - Volume of gas produced in cylinder. The rate of how much oxygen is produced. Controlled variables o Temperature - to control this variable I will keep a water bath at room temperature which is 23?C.

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

This means that the initial rate of reaction will increase with volume. Atmospheric Pressure As atmospheric pressure increases, the closer together the molecules would be packed, with an effect similar to increasing the concentration of the reactants - the frequency of collisions would increase, which means there would be more decomposition per second occurring.

1. ## Investigate the factors, which affect the rate of decomposition of Hydrogen Peroxide.

solution and to get accurate results, I needed to collect all the gas given off throughout the reaction. I then watched the measuring cylinder very closely so that as soon as the amount of gas collected reached 30cm3, I could stop the clock.

I poured us each a glass and handed one to her. She took a sip and almost choked on it when a firework went of above us. "O Danny, you didn't" she said turning to me. "O yes I did" I said gazing back at her.

1. ## Investigation into the effect of increasing the concentration of hydrogen peroxide on the decomposition ...

This means there is not much chance of an acid particle hitting a magnesium atom. Here the acid is more concentrated- there are more acid particles in it. There is now more chance of a successful collision occurring. The more successful collisions there are, the faster the reaction.

2. ## Investigation into the decomposition of hydrogen peroxide.

The variable I have chosen to investigate into is the concentration of the enzymes. This will mean that I will alter the concentration of catalase whilst using water to keep the volume the same overall. So, as I decrease the amount of catalase I will increase the amount of water.

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