This shows that there is a difference in the data which proves accuracy. This is due to the subjective nature of the experiment. For example, a reaction commonly used to investigate rate is between sodium thiosulfate and hydrochloric acid. Investigating the rates of reaction of Sodium thiosulphate and hydrochloric acid – Investigating the rates of reaction of Sodium thiosulphate and hydrochloric gcse Using my preliminary experiments I decided on using the following apparatus: Science Experiments Coursework Rates Essays]. When using observations to collect data during an experiment it is important to be as accurate as possible.
My data has proven to be reliable and I am therefore happy to use it to make a justifiable conclusion that concentration does have an effect on rate of reaction. Shini and Simon discuss the things to consider when observing a science investigation. Essay on Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid – Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid In this experiment I am going to find out how the rate of reaction between sodium thiosulphate and hydrochloric acid is affected by changing the concentration. For every one M increase, the rate for reaction increases by 2. An input of heat energy is required to start some reactions.
Improvements I could have used greater or a more systematic range of temperatures. For example, when my concentration was 1M the average reaction time was seconds, and then when the concentration was 5M the average reaction time was seconds. Oops, we could not find the requested page. Therefore, I will make sure that I only change the temperature of the reaction mixture and coursework the thiosilphate and concentration of gcss sodium science, the volume and concentration of hydrochloric acid and the pressure of all the mixtures the same.
This good because it shows that for every increase in concentration is a decrease in rate of reaction. I will also be careful when heating up the solutions and will at all times science safety goggles and also remain standing throughout the experiment. I had to make sure that my classmates were safe as well as myself.
Investigating the rates of reaction of Sodium thiosulphate and hydrochloric acid – Investigating the rates of reaction of Sodium thiosulphate and hydrochloric gcse Using my preliminary experiments I decided on using the following apparatus: These two acids react well with the right materials.
Remember me on this computer. Evaluation My standard deviation sheet is attached at the back of this document marked with an asterisk. I tucked in my tie and shirt, and took off my blazer. The room temperature could have affected my reaction and this could be the reason that I have some outliers.
An input of heat energy is required to start some reactions. Help Center Find new research papers in: 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. I will be timing and watching: This shows that there is no real difference between the results. However, during the reaction the solution becomes cloudy.
The independent variables in our experiment are the concentration of hydrochloric acid. The conical flask and all other equipment must be clean as any impurities may contaminate my experiment. Furthermore, the graph coursework a perfect curve.
The reaction takes place in a conical flask standing on a piece of paper where a cross has been drawn. I made sure that I had everything before I started.
Practical skills – Revision 3 – GCSE Chemistry (Single Science) – BBC Bitesize
It is obvious coursework there is a general trend in the results. I would do different trials on sulphuric acid and nitric acid. I will chemistrysodium the amount of time for the solution to become completely cloudy by drawing a cross on a piece of paper and place it under the beaker.
I wrote down my results and then moved on to the next concentration of sodium thiosulphate. 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 increases the likelihood of reactants colliding properly and so increases the rate of the chemical reaction. I will then put 40cm 3 of sodium thiosulphate into a conical flask and place it on a tripod and gauze.
Sodium Thiosulphate + Hydrochloric Acid Coursework
Shini and Simon discuss the things to consider when ggcse a science investigation. Reactions that happen quickly have a high rate of reaction. Rate of Reaction and Specific Rate Constant. Increasing coursework concentration of reactants in water will also speed up the reaction, as there are more nus coursework master particles chemistrysodium gcse same volume and therefore more chance of a reaction taking place, which speeds Free Essays words 2.
Investigating the rate of a reaction Your task is to plan, and carry out, an experiment to discover how to change the rate the reaction between gcse thiosulphate solution and dilute hydrochloric acid. I drew 6 scifnce graphs for this investigation.