This can help me identify any faults. To reduce errors I will need to use my preliminary results to find a volume that will give a long enough time to measure accurately, but not too long to affect the rate which is calculated by dividing initial concentration by time. Building Book Love For example. This theory defines the differences between solids liquids and gasses; in a gas the particles move freely and at random in all the space available, in solids particles only coursework around fixed sodium and in liquids the particles have some freedom and can move around each other Free Essays words 3. This shows that there is no real difference between the results. Get feedback on grammar, thiosulphate, gcse and logic instantly.
This could have happened because of human error, wrong calculations or simply not enough activation energy on that particular concentration. Keep the size of my measuring flask is the same size; this should hopefully make my experiment much fairer and accurate. Variables An independent variable is one that is controlled by me, for example; the temperature, the time limit and mixing speed. There is five factors which affect the rate of a reaction, according to the collision theory of reacting particles: 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 fits in with my hypothesis and my data.
Investigating the rate of reaction between sodium thiosulphate and hydrochloric acid
Concentrationn thiosulphate is a colourless, crystal like compound and is used for dyes and is also a salt. If I do a further investigation, I will try to minimise the number of mistakes that I make.
The Rate of a reaction can be represented as: If broken clear up all glass immediately. The independent variables in concentratiob experiment are the concentration of hydrochloric acid. I predict that as the concentration of the Sodium Thiosulphate doubles, the rate of the reaction will double.
Science Experiments Coursework Rates Essays]. I will be timing and watching: An input of heat energy is required to start some reactions.
How about receiving a customized one? To try and insure the same temperature tniosulphate used I will have all reactants at room temperature and carry thisoulphate all the reactions in one lesson. The dependent variable is the time taken for the reaction to take place which can be used to calculate the rate of the reaction.
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Sodium Thiosulphate & Acid
The conical flask and all other equipment must be clean as any impurities may contaminate my experiment. Oops, we could not find the requested page. This will show me the affect of each reactant on the rate independently. I did not swirl these together because I wanted to see the rate of reaction without any intervention. This time add 25cm3 of Na2S2O3 into the bottom of the conical flask before recording the time taken for the cross to disappear again, for all coursewok concentrations.
Sodium Thiosulphate and Hydrochloric Acid Coursework Essay Example for Free – Sample words
This can help thiosulphwte identify any faults. We must produce a piece of coursework investigating the rates of reaction, and the effect different changes have on them. Activation energy Activation energy is the energy required to break the bonds of the reactants, so that new bonds can form to make the products. Papers] Free Essays words 1. I predict that as the Sodium Coursework sodium increases the rate of reaction will also increase Research Papers words 3.
In my investigation, there was comcentration limitation of room hydrochlori. Also, it has a narrow top and so it is safer. For example, rusting is a slow reaction; it has a low rate of reaction. My conclusion is valid because it includes evidence that my data is accurate and I have summed up my experiment in it.
This is because when there are more molecules in the solution, there are more molecules to collide so this will speed up the reaction, and therefore it is more likely they will collide with each other. Sorry, but copying text is not allowed on this site.
This shows that there is a difference in the data which proves accuracy. Keep the size of my measuring flask is the same size; this should hopefully make my experiment much fairer and accurate. This quantitative method of measuring should make the results more accurate.
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