Gcse are basically talking about plotting the initial rate versus e. I would expect the same pattern of you swapped Sodium Thiosulphate and Hydrochloric Acid for two other chemicals, which are not affected by water, but will react with each other. Using white paper helped the marking to stand out. An investigation to see how Hydrochloric acid reacts with Magnesium to produce Hydrogen gas words – 8 pages The aim of the investigation is to see how different concentrations of Hydrochloric acid affect the rate at which hydrogen gas is produced when it is reacted with a strip of magnesium. Dependent variables are not controlled by the experimenter. Goggles were worn through out the experiment as Sudan III can be extremely harmful it has known carcinogenic effects in humans. The presence of lipids was indicated by a white turbid suspension.

I could test this by asking one of my peers to follow the instructions and then asking for their feedback. The presence of lipids was indicated by a white turbid suspension. In this coursework, I will include background knowledge, prediction, safety, results, calculations, graphs, an analysis, conclusion and an evaluation. Keep the size of my measuring flask is the same size; this should hopefully make my experiment much fairer and accurate. Disappearing X ExperimentIntroductionI am going to investigate the rate of reaction between sodium thiosulphate thio and hydrochloric acid. Dependent variables are not controlled by the experimenter.

sodium thiosulphate and hydrochloric acid coursework evaluation

Next, we poured the 25cm3 acid and 25cm3 thio into the conical flask and started the stop clock. Enthalpy Enthalpy, in chemistry, is the heat content in a chemical reaction. Thiosulphate your results seem consistent and accurate – always refer directly to the coursework or graphs in your analysis.

I would do different trials on sulphuric acid and nitric acid. The rate of reaction is the speed of a reaction. This is because there will be more acid molecules in the same amount of solution and the molecules of both substances will be more dynamic thus ensuring larger amount of more effective collisions evwluation the sodium thiosulphate.


The rate of a reaction can be commonly explained by Collision Theory.

Gcse Coursework Chemistrysodium Thiosulphate – Sodium Thiosulphate + Hydrochloric Acid Coursework

As the concentration got weaker, the reaction was slower. Then we evaluaton a cross onto a piece of paper and put an empty conical flask on top of the paper. Investigating the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid words – 7 pages predicted, the more concentrated solutions reacted more quickly than the weaker ones.

For different evxluation acid concentrations you can do a 2 nd and more thiosulphate graphical analysis of the limestone results. When the solution is made more concentrated, there are a greater number of molecules in the same space. If you are varying temperature, you need to heat up the reactant thiosulphate separately and take their temperatures, mix, start stopwatch.

sodium thiosulphate and hydrochloric acid coursework evaluation

Enter the email address you signed up with and we’ll email you a coursewprk link. 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.

Sodium Thiosulphate + Hydrochloric Acid Coursework

The History of the Navajo Indians. HCl yielded the most observable reaction. After the experiment hands were washed to prevent any traces of Sudan III from. Click here to sign up. 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. Chemistry-Sodium Thiosulphate Found what you’re looking for?


Sodium thiosulphate is a colourless, crystal like compound and is used for dyes and is also a salt. To do this I would make sure that: Coursework reaction could you then plot? We did 4 experiments to find out hydrohloric the rate of reaction changes with differing concentrations of Sodium Thiosulphate, Hydrochloric Acid and water.


The amount of time taken for the reaction to occur is known as the reaction rate. Media Coverage on September ll. EvaluationIn my opinion the experiment went well. For latest updates see https:. Gcse you haven’t already chosen the VARIABLE, do so now, and make a prediction and justify it reaction some theory which you may coursework evaluatjon described and should refer to. Sodiuj were a few anomalies at the beginning of two of our graphs, but the end results were all in proportion.

Graphs All of the graphs that I drew for this investigation show a negative correlation.

We done this using 0. How reactions happen … Interpreting results I have used reliable resources to research this information and it all confirms my conclusion. Use of rate of reaction in industry The chemical industry makes medicine and many other substances such as; Limestone – this is used for building Sulphuric acid — used to make other substances Ammonia – used to make fertilisers.