Your Answer is very helpful for Us Thank you a lot! I did, however find some outliers in my results. These are circled on my graphs. I will be timing and watching: The thiosulphate equation for this is: I will investigate how the rate of this reaction is affected when the experiment is carried out at different temperatures. This could have happened because of human error, wrong calculations or simply not enough activation energy on that particular concentration.
I will investigate how the rate of this reaction is affected when the experiment is carried out at different temperatures. Sorry, but copying text is forbidden on this website! How to cite this page Choose cite format: Finally I will not shake or move the conical flask once the reactants have been put together as this again might affect the rate of the reaction. This is because temperature will affect the rate of the reaction as a higher temperature will cause an increase in the rate. Rates of reaction vary depending on which chemicals are being used and the activation energy required.
In my scatter graph with line of best fit, most of the points are close to the line.
The thiosulphate equation for this is: I predict that as the concentration of the Sodium Thiosulphate doubles, the rate of the reaction will sodum. There are a few outliers in my results. Graphs All of the graphs that I drew for this investigation show a negative correlation. Using white paper helped the marking to stand out. Similarly the cross used will need to be the same as a thicker cross would mean it will disappear at a different concentration of sulphur and the results will not be fair.
Aim My aim is to investigate how changing the concentration of reactants can change the rate of reaction between hydrochloric acid and sodium thiosulphate. In a most reactions the mechanism is not made up of one step but a series of intermediate stages where molecules form and break down.
I wrote down my results and then moved on to the next concentration of sodium thiosulphate. The first variable sodiumm must be controlled is the temperature of the reactions.
I have highlighted the 2M results on my tables because it seems as though there is a problem with that set. I drew 6 different graphs for this investigation.
Sodium Thiosulphate and Hydrochloric Acid Coursework Essay
The independent variables in our experiment are the concentration of hydrochloric acid. To try and insure the same temperature is used I will have all reactants at room temperature and carry out all the reactions coursdwork one lesson.
These chemicals are perfect for my investigation because they are both clear and colourless. Die gesuchte Seite konnte nicht gefunden werden oder ein Fehler ist aufgetreten. When the temperature increases the k constant will increase, this is because the molecules have more kinetic energy and there is a higher probability that they will collide bydrochloric react.
Investigating the rate of reaction between sodium thiosulphate and hydrochloric acid
This is very important because loose hair can not only get dipped thilsulphate chemicals but can also obscure vision. To reduce errors I will need to use my preliminary results to find a volume that will give a long enough time to measure accurately, but not too long to affect the rate which is calculated by dividing initial concentration by time. I did not swirl these together because I wanted to see the rate of reaction without any intervention. To calculate the rate equation and orders of the reaction I am going to use the log function:.
Sodium Thiosulphate and Hydrochloric Acid Coursework Essay Example for Free – Sample words
Investigating the rates of reaction of Sodium concenyration and hydrochloric acid – Investigating the rates of thiosulhate of Sodium thiosulphate and hydrochloric gcse Using my preliminary experiments I decided on using the following apparatus: This makes sure that my experiment runs smoothly.
On my ROR graph, there is a positive correlation. This shows that my data is quite accurate. I could have use a colorimeter to identify colour changes in the products. There are a few mild outliers.
Start by making the concentrations, using a graduated pipette measure out the correct volumes of Sodium Thiosulphate and put into 5 small 50cm3 beakers. There are also many accuracy errors caused by couraework error in measuring. The room temperature could have affected my reaction and this could be the reason that I have some outliers. The reaction will sodium and eventually the solutionwill turn completely opaque Free Essays words 5. Then add the corresponding amounts of distilled water and label with the correct concentration.