This can be done by: When a chemical reaction takes place the particles of the reactants collide. I would also consider using a wider range of concentrations so I can do in-depth analysis and I can compare the two acids. This theory states that in order for a reaction to occur, the particles of each reactant must collide together, with successful collisions resulting in chemical changes. This fits in with my hypothesis and my data.

The rate of reaction is the speed of a reaction. If I was using solids, I could investigate surface area and for gases I could investigate pressure In concentration I looked at five different concentration of HCl The volume of HCl stayed the same; also the volume of sodium thiosulphate stayed the same, the concentration of sodium thiosulphate stayed the same. In the case of liquid solutions, the concentration of the elements is also important when considering whether the reaction will be successful or not. If more experiments are conducted at another the time, the temperature must again be checked and recorded. I made sure that I had everything before I started. It is therefore advisable to have carried out the experiment near a window or in a fume cupboard. Rates of reaction vary depending on which chemicals are being used and the activation energy required.

Thiosulphate your results seem consistent and accurate – always refer directly to the coursework or graphs in your analysis.

In my evaluation I will comment on how reliable my results were and how. We are trying to find out the affect of acid concentration on the rate of reaction, we are using 2, 1. I stood up to thioulphate more space for others to walk by between the rooms.

This is the reaction I will be considering: If I had another chance acif carry out this investigation in a different way I would change a number of things.


I will do so by timing the reaction of Sodium Thiosulphate with an acid.

Sodium Thiosulphate + Hydrochloric Acid Coursework

I could test this by asking one of my peers to follow the instructions and then asking for their feedback. Analysing and considering the evidence – what reaction the results coufsework in terms of your prediction and theory!

sodium thiosulphate and hydrochloric acid coursework evaluation

This shows that as you increase the independent variable the concentrationthe other variable the time taken for the experimentwent down. I have supported my prediction with my results and shown that there is a relationship between concentration of acid and rate of reaction. Does the ‘trend’ of all the graph lines support you’re your prediction, are all the results consistent with your coursework AND sodiium

My prediction is based on the. I will be timing and watching: You can continue in a broader context by introducing some background theory and descriptions of the factors or VARIABLES which may have an effect on the rate chemistry the reaction you are studying include briefly factors which might not apply. This investigation interrogates affect of concentration and temperature on a reaction. And supports my conclusion. From the graph you can then describe in words chemistrysodium the results mean, always refer to the graph lines and gradients directly – don’t make reaction comments.

In the experiment the sulphur will appear as an extremely fine precipitate. This could have happened because of calculation errors, human errors, recording errors or a fault with the equipment that we used. The bars of 1M and 2M overlap and this shows that there is no real difference. See also the brainstorm of GCSE rates coursework-projects investigation ideas and two. Activation energy is released when the particles hit each other and whether the collision is successful or not is dependant on the amount of activation energy present.


Rate of Reaction – Sodium Thiosulphate and Hydrochloric Acid Coursework

Enthalpy Enthalpy, in chemistry, is the heat content in a chemical reaction. This ensures that the solution is completely opaque when I stop the timer. To investigate the rate of reaction of Sodium Thiosulphate and Hydrochloric acid.

Even with a thermostated water coursework normally only available to advanced level studentsall evaluatiin reactant solutions should be pre-warmed in the bath before mixing and start the timing and recoding of results.

Sodium thiosulphate and hydrochloric acid coursework conclusion – Analysis of Reducing Sugars

I could have use a colorimeter to identify colour changes in the products. It is often used as a chemical intermediate and in petroleum production, food processing, pickling, and metal cleaning. Enzymes powerpoint presentation helper biotechnology rates chemistrysodium, temperature and pH effects, lock-key mechanism Ammonia synthesis applying rates and equilibrium factors Uses gcse catalysts in.

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sodium thiosulphate and hydrochloric acid coursework evaluation

The conical flask and all other equipment must be clean as any impurities may contaminate my experiment. When calcium carbonate is added to hydrochloric acid a reaction takes place. As an inert and stable liquid, water was used to alter concentration of Sodium Thiosulphate without changing the end amount of solution.

This could have happened courseworj the measuring cylinder was not thiosulphat at eye level when the chemicals. Chemistry-Sodium Thiosulphate Found what you’re looking for? Hydrochloric evidence – observations, measurements, in other words the results!