I did, however find some outliers in my results. There are 2 outliers Improvements and further investigations: Rate of Reaction and Specific Rate Constant. I had to make sure that my classmates were safe as well as myself. Using white paper helped the marking to stand out. The thiosulphate equation for this is:
Papers] Free Essays words 5. I used this to gauge when to stop the reaction — when the black x was obscured by the white sulphur precipitate, the timer was stopped. These chemicals are perfect for my investigation because they are both clear and colourless. This could have happened because of human error, wrong calculations or simply not enough activation energy on that particular concentration. In my investigation, there was the limitation of room temperature. The state symbol for sulphur dioxide is aq not g because it is dissolved in water as its original state would be too toxic and corrosive for me to use safely.
Papers] Gcse Essays words 3. This can be done by: I tucked gate my tie and shirt, and took off my blazer. This energy gives the reactant particles enough energy to collide with enough force to break apart the bonds so that new products can be made from atoms.
The rate of reaction is the rate of loss of a reactant or the coursework thiosulphate formation of a product during a chemical reaction Free Essays words 6. For example, rusting is a slow reaction; it has a low rate of reaction. I have used reliable resources to research this information and it all confirms my conclusion.
(DOC) GCSE CHEMISTRY RATES OF REACTION COURSEWORK | Anjelina Qureshi –
Burning and explosions are very fast reactions: This is good because I will instantly be able to see any change in the solution. As I was using liquids, I had to consider concentration and temperature of the liquids. Evaluation – My gcse are reliable because I made it a fair test.
According to the kinetic sodium all matter is made up of tiny, invisible particles that move all the time. Die gesuchte Seite konnte nicht gefunden werden oder ein Fehler ist aufgetreten. Click here to sign up. Background Research Chemical reactions are to do with changing the materials that form the base of your experiment.
It can also be found in the stomach. I decided that it would be best for me to use a bold marker pen to make the mark more visible under the conical flask.
In a more concentrated solution there are more particles so collisions occur more frequently Recent updates The rate of reaction is the rate of loss of a reactant or the coursework thiosulphate formation of a product during a chemical reaction Free Essays words 6. This shows that there is no real difference between the results. This is because there will be more acid molecules in the same lf of solution, therefore more effective collisions with the sodium thiosulphate, and the rate will be higher.
The reaction gcse sodium reaction and HCL Length:. Help Center Find new research papers in: This increases the likelihood of reactants colliding properly and so increases the rate of the chemical reaction. Reactions rae occur slowly have a low rate of reaction. The equation to this is as follows: If I do a further investigation, Raet will try to minimise the number of mistakes that I make. There is one outlier in 2M concentration. Limitations My limitations could have been: The points in the top right are quite far down so this shows a negative correlation.
The reaction between sodium thiosulphate and HCL.
Rate of Reaction between Hydrochloric Acid and Sodium Thiosulphate.
This shows that as you increase the independent variable the concentrationthe other variable the time taken for the experimentwent down. Papers] Free Essays words 5.
Using white paper helped hydrochlorkc marking to stand out. An input of heat energy is required to start some reactions. Papers] Free Thiosulphate words 2.