Contributors The method for determining a reaction rate is relatively straightforward. Since a reaction rate is based on change over time, it must be determined from tabulated values or found experimentally.
The time taken for the precipitate to form is an indicator for the reaction rate. This is called fair testing. The more concentrated the sodium thiosulphate is, the faster the reaction rate.
This means that, as shown above, there are many more Na2S2O3 molecules present, in the same volume. This means that the reaction will occur much quicker, as there are many more molecules to react with.
As the concentration increases, the time taken for the X to disappear from view decreases, meaning the reaction rate is faster. Some safety precautions were undertaken to ensure no serious accidents occurred: A preliminary experiment was performed to see whether the reaction works, and what needs to be improved on before the main experiment.
To discover reaction rate, we need to know when the solutions have completely precipitated. In this case, we can put a piece of paper, with an X, under a conical flask and see how long it takes for the X to disappear from view, because of the precipitate formed.
The experiment was only a rough guide, so only the maximum and the minimum concentrations were tested, to ensure that the experiment worked as it was supposed to.
This was then repeated to back up the original, and make sure that there were no extremes. The results are as follows all volumes are in cm3:This increases the likelihood of reactants colliding properly and so increases the rate of the chemical reaction.
Aim My aim is to investigate how changing the concentration of reactants can change the rate of reaction between hydrochloric acid and sodium thiosulphate. Investigating the rate of reaction between sodium thiosulfate and dilute hydrochloric acid.
Sodium thiosulphate + Hydrochloric acid ïƒ Sodium Chloride + Sulfur Dioxide + Sulfur + Water. Balanced Symbol Equation for this reaction is. Na2S2O3 (aq) + 2HCL (aq)ïƒ 2NaCl (aq)+SO2 (g)+H2O (l).
The reaction between sodium thiosulphate solution and hydrochloric acid. This is a reaction which is often used to explore the relationship between concentration and rate of reaction in introductory courses (like GCSE). When a dilute acid is added to sodium thiosulphate solution, a pale yellow precipitate of sulphur is formed. Chemical Reaction Essay Examples. 26 total results. History and Methods of Fermentation. words. An Experiment to Determine the Rate of Reaction Between Hydrochloric Acid and Sodium Thiosulphate. 2, words. 5 pages. This increases the likelihood of reactants colliding properly and so increases the rate of the chemical reaction. Aim My aim is to investigate how changing the concentration of reactants can change the rate of reaction between hydrochloric acid and sodium thiosulphate.
Collision Theory. The effect of temperature on this reaction can be measured by warming the sodium thiosulphate solution before adding the acid. The temperature must be measured after adding the acid, because the cold acid cools the solution yunusemremert.com time, the temperature is changed between experiments, keeping everything else constant.
The effect of temperature on reaction rate Introduction In this experiment the effect of temperature on the rate of reaction between sodium thiosulfate and hydrochloric acid is investigated.
We will write a custom sample essay on Chemistry Concentration effects rate of reaction specifically for you for only $ $/page. when the concentration of the Sodium Thiosulphate and Hydrochloric acid is changed it also has an effect on the reaction rate.
Chemistry Concentration effects rate of reaction. How About. Investigating The Rate Of Reaction Between Sodium Thiosulphate And Hydrochloric Acid In this coursework I am going to be investigating the rate of reaction between sodium thiosulphate and hydrochloric acid.
The rate of reaction can be changed by theses 4 factors: 1.
Temperature 2. Concentration 3. Catalyst 4.