Rate of reaction coursework method

Tripod Method Firstly I will draw a small dark cross on a piece of paper and place it on a bench mat. I will then put 40cm3 of sodium thiosulphate into a conical flask and place it on a tripod and gauze. I will heat the solution for a few minutes until the desired heat is reached, i.

Rate of reaction coursework method

A few health and safety ideas on risk assessment AIM for a high investigation-project mark - you have nothing to lose for your assessment! Decomposing hydrogen peroxide with a solid catalyst or soluble transition metal compound.

Enzyme catalysed reactions e. The sodium thiosulphate-hydrochloric acid reaction, you can investigate the effects of temperature and concentration. Your write-up must be your work produced from your study and your experiments.

This web page is meant to teach you how to tackle an coursework e. Your coursework write-up must expressed in your language and expressed at 'your scientific level'. Your teacher will have a good idea what to expect and you must be able to justify all your write-up.

More marks are lost by not writing things down, than by not doing experiments! For sources and references you should research 'rates of reaction' for theory, experimental methods etc.

Word process your work if you can and your results can be tabulated and processed into graphs using software packages like Excel Preliminary work usually involves doing a few trial runs of the experiment to see how it goes and making modifications if necessary.

By writing up how, and why, you have changed the experimental conditions or 'recipes' you can gain more marks. Planning - the theory and your experiment design! If you are confident and chosen the VARIABLE you want to investigate you should try to make a prediction and maybe justify it with some theory if you can.

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 of the reaction you are studying include briefly factors which might not apply.

In your 'method' description use the correct units or descriptors.

Rate of reaction coursework method

The factors to discuss might be Is there any other factor for the reaction you are studying? If you have decided, for example, to investigate the effect of acid concentration on the speed of a reaction, then everything else should be kept constant for a fair test, and this should be obvious in your plan for the reasons discussed above!

If you haven't already chosen the VARIABLE, do so now, and make a prediction and justify it with some theory which you may have previously described and should refer to.

If a gas is formed, there are at least two ways of collecting a gas e.

The method of determining the rate of the reaction itself was to place the flask containing the progressive reaction on a sensitive scale and as the reaction progressed, the weight was recorded at an interval of every two minutes. Essay on 7 Kinetics Rate Of Reaction rate of reaction coursework Essay. Students follow the rate of reaction between magnesium and the acid, by measuring the amount of gas produced at 10 second intervals. 3 cm of magnesium ribbon typically has a mass of g and yields 40 cm 3 of hydrogen when reacted with excess acid. 50 cm 3 of 1M hydrochloric acid is a . The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. It is measured by dividing 1 by the time taken for the reaction to take place.

Briefly explain how the method can be used to measure the speed - the results of the first few minutes is usually the most crucial - you can discuss briefly other methods, but perhaps better in evaluation as a means of further evidence.

When you have decided on the method, give a detailed description of how you might carry it out. Clearly indicate why the method would be expected to produce precise and reliable evidence - the results! Include 'health and safety' points. If you are looking at changing the reaction temperature, its not easy to accurately vary and control the temperature of the reactants without a thermostated water bath to hold the reaction flask in.

rate of reaction between Sodium thiosulphate and hydrochloric acid is - Rates of Reaction Coursework. Introduction. In this piece of science coursework I will be experimenting how the rate of reaction between Sodium thiosulphate and hydrochloric acid is affected by the concentration of Sodium thiosulphate. Method. In order for me to do. GCSE Chemistry Coursework: 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 sodium thiosulphate solution and dilute hydrochloric acid. Jul 02,  · A grade GCSE chemistry coursework, Rates of reaction, Decomposition of sodium thiosulphate, introduction, method, safety, results, discussion. (variables) which determine how fast or slow the reaction can take place (rate of reaction). These are: Initial volume of sodium thiosulphate. Useful article on Rates of reaction Decomposition of Reviews:

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

If you are varying temperature, you need to heat up the reactant solutions separately and take their temperatures, mix, start stopwatch. However, they will cool a little standing out in the laboratory, so not completely satisfactory solution to the problem.

In the case of the sodium thiosulphate - acid reaction, you can leave the thermometer in the flask and take the temperature at the end, then use an average for the temperature of the reaction. If temperature isn't a variable, it must be kept constant.

The simplest solution here, is to make sure all the chemicals have been standing in the laboratory prior to the lesson. Then, they will all be at the same temperature, which should be recorded. If more experiments are conducted at another the time, the temperature must again be checked and recorded.

Refer to any previous laboratory experience with 'rate of reaction' experiments which may have helped you decide and design the experimental method. Obtaining evidence - observations, measurements, in other words the results!GCSE Chemistry Coursework: 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 sodium thiosulphate solution and dilute hydrochloric acid.

The hydrochloric acid should be about 1M for a reasonable rate of reaction. Each experiment run will need 50 cm 3. Though low hazard, eye protection is necessary as you may get a . rate of reaction between Sodium thiosulphate and hydrochloric acid is - Rates of Reaction Coursework.

Introduction. In this piece of science coursework I will be experimenting how the rate of reaction between Sodium thiosulphate and hydrochloric acid is affected by the concentration of Sodium thiosulphate.

Method. In order for me to do. rate of reaction between Sodium thiosulphate and hydrochloric acid is - Rates of Reaction Coursework. Introduction. In this piece of science coursework I will be experimenting how the rate of reaction between Sodium thiosulphate and hydrochloric acid is affected by the concentration of Sodium thiosulphate.

Method.

The rate of reaction of magnesium with hydrochloric acid- Learn Chemistry

In order for me to do. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. It is measured by dividing 1 by the time taken for the reaction to take place.

In order to get maximum marks in this coursework it is vital that you discuss all factors which affect the rate of a reaction. These include: Temperature.

GCSE Science/Rates of reaction coursework - Wikibooks, open books for an open world