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rate of reaction

By doing it every 10 seconds it gave readings fairly quickly which was important as the gas would probably be produced very quickly and so results will also need to be taken at a relatively good speed. The results will be taken for 100 seconds to give a good picture of what happens in the reaction not just a few seconds of it. From earlier experiments with marble chips and hydrochloric acid I found that it "fizzes- which creates a kind of splash which may actually spray out of the top of the conical flask. To stop this I put a clump of cotton wool in the neck of the flask this acted like a shield to prevent splashes of acid escaping from the flask while the reaction is was taking place. Cotton wool was used as it is able to let the gas through but not the larger water molecules.
             After 100 seconds the experiment was stopped and the conical flask was thoroughly cleaned to remove any residue that may affect the next reaction. This time however the medium marble chips were used instead of small and after the medium was used the large was reacted and so on. In total this process was repeated 5 times. i.e. we conducted 5 reactions with small marble chips 5 reactions with medium sized marble chips and so on. However during all of these experiments the amount of acid and the concentration of the acid was kept constant to obtain fair results. I was also careful to always use the same weighing scales for each experiment as some may vary in accuracy. In total I am going to perform 20 reactions, this will give enough results to find a firm conclusion to the investigation. It is also enough to be able to calculate and average set of results for each size of marble chip.
             During the experiment I am going to wear safety spectacles as a safety precaution from the acid as it could spill or splash into the eyes. I will also remain on my feet (not sit down) so that I could get out of the way easily if something spilt.


Essays Related to rate of reaction

1. Effect of Temperature on the Rate of Reaction.

Aim: To enquire the effect of Temperature on the Rate of Reaction. ... The lowest reading was 5secs with the highest reaction rate of 0.2s-1. ... However at high temperatures the reaction rate increased. ... Yet at increased temperature, the rate of reaction was faster. ... This positive correlation between temperature and rate of reaction suggests that the faster the rate of reaction, the more increase there is in temperature. ...

  • Word Count: 1436
  • Approx Pages: 6
  • Grade Level: High School

2. Rates of Reaction Coursework - Hydrogen Peroxide and Catalas

The purer the Hydrogen Peroxide, the quicker the reaction rate. ... Different reactions have different rates. ... A Catalyst alters the rate of reaction, without being converted itself. ... Because the overall rate of a step wise reaction depends on the rate determining step (slowest), the way that the reaction rate changes with concentration alteration will depend on the molecularity of the slowest step. ... Increasing the temperature increases the reaction rate. ...

  • Word Count: 2748
  • Approx Pages: 11
  • Grade Level: High School

3. Rates of reaction

Rates Of reaction Background A Chemical reaction is the process that produces a chemical change.The rate of a reaction is the speed at which a reaction happens. If a reaction has a low rate that means the molecules combine at a slower speed than a reaction with a high rate. ... The rate of reaction depends on the type of molecules which are combining. We conducted an experiment to test the rate of reaction when Mg is added to Hcl (aq). ... You could increase the rate of reaction also by increasing the surface area. ...

  • Word Count: 420
  • Approx Pages: 2
  • Grade Level: High School

4. reactions

These include decomposition, polymerization, chain reactions, substitute reactions, elimination reactions, addition reactions, ionic reactions, and oxidation-reduction reactions. ... Even the position of the reactants will affect the reaction rate. ... They cannot make impossible reactions occur, they only contribute to the reaction to increase the reaction rate. ... Inhibitors retard the reaction rate. ... The reaction rate can be controlled for observation by varying the intensity of the radiation. ...

  • Word Count: 2203
  • Approx Pages: 9
  • Grade Level: High School

5. Rates of Reaction

I believe that the concentration of sodium thiosulphate has a direct effect on the rate at which the reaction occurs. Preliminary work Having used the internet to Research I have found some useful things on rates of reaction. ... This will give us a value for the rate at which the reaction occurred, which I can compare for different concentrations. ... Movement Of Reacting Mixture - If I shake the conical flask while it is reacting, then the reaction may speed up and therefore the rate of reaction would be quicker. ... As the concentration of sodium thiosulphate is increased, then the rate...

  • Word Count: 2059
  • Approx Pages: 8

6. Rates of reaction

Rates Of Reaction Chemical reactions only occur when reacting particles collide with each other with enough energy to react. There are four important factors, which affect the rate of reaction: Temperature Concentration Surface area Catalyst Temperature of the reactants The lower the temperature in a cold reaction mixture, the slower the particles move. ... Using a catalyst Catalyst is something that helps to speed up the rates of the reactions but does not take parts in the reaction. It can be used over and over again so it could increase the rate of conversion of reactants int...

  • Word Count: 606
  • Approx Pages: 2
  • Grade Level: High School

7. rate of reaction

Investigation into the Rate Of Reactions Area P: Planning I am investigation how concentration effects the rate of reaction. ... The longer the reaction took the slower it was reacting, the quicker the reaction took the faster the reaction was occurring so it would have a high reaction rate. The reaction rate is equal to one over the time it took. Reaction time will be measured in second and reaction rate s-1. ... Concentration increases the rate of reaction. ...

  • Word Count: 1509
  • Approx Pages: 6
  • Grade Level: High School

8. Rates of Reaction

Rates of Reaction Plan Calcium carbonate and hydrochloric acid react together. I am going to investigate the rates of reaction of limestone chips CaCO3 in hydrochloric acid under different temperatures. I will monitor r the rate of reaction. Five factors that affect the rate of reaction are concentration of the acid, temperature, pressure, catalyst and particle size (surface area). ... Prediction I predict that the rate of reaction will increase proportionally with the temperature. ...

  • Word Count: 891
  • Approx Pages: 4
  • Grade Level: High School

9. Rates of reaction

Rates of reaction Introduction This experiment is to investigate the rate of reaction between Sodium Thiosulphate and Hydrochloric acid. ... • Watch the reaction. ... This increases the change of collisions, and so the reaction is faster. ... Conclusion From my results I have found that rate of reaction goes down as the concentration goes up. This means that my prediction was right, as I predicted that rate of reaction would be faster as the concentration of the acid got higher. ...

  • Word Count: 568
  • Approx Pages: 2
  • Grade Level: High School

10. Chemical Reactions

These include decomposition, polymerization, chain reactions, substitute reactions, elimination reactions, addition reactions, ionic reactions, and oxidation-reduction reactions. ... Even the position of the reactants will affect the reaction rate. ... They cannot make impossible reactions occur, they only contribute to the reaction to increase the reaction rate. ... Inhibitors retard the reaction rate. ... The reaction rate can be controlled for observation by varying the intensity of the radiation. ...

  • Word Count: 1893
  • Approx Pages: 8
  • Has Bibliography
  • Grade Level: High School

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