The bars of 1M and 2M overlap and this shows that there is no real difference. These two acids react well with the right materials. I had to make sure that my classmates were safe as well as myself. Using white paper helped the marking to stand out. 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.
Evaluation My standard deviation sheet is attached at the back of this document marked with an asterisk. This is the reaction I will be considering: There are 2 outliers Improvements and further investigations: These reactions only happen if the reacting molecules collide properly. Graphs All of the graphs that I drew for this investigation show a negative correlation.
These are circled on my graphs. These two acids react well with the right materials.
As wnd as the chemicals were in, I started the timer. I did, however find some outliers in my results. I will be timing and watching: I also made sure that any clothing or long jewellery was clear and out of our way as clothing can also get caught. An input of heat energy is required to start some reactions. This is the reaction I will be considering: I could have use a colorimeter thiosylphate identify colour changes in the products.
The reaction gcse sodium reaction and HCL Length:. There are a few mild outliers.
(DOC) GCSE CHEMISTRY RATES OF REACTION COURSEWORK | Anjelina Qureshi –
This good because it shows that for every increase in concentration is a decrease in rate of reaction.
Papers] Gcse Essays words 3. Coursewkrk 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: It is often used as a chemical thiosulhpate and in petroleum production, food processing, pickling, and metal cleaning.
There is one outlier in 2M concentration.
How does temperature affect the rate of reaction between sodium thiosulphate and hydrochloric acid?
The room temperature could have affected my reaction and this could be the reason that I have some outliers. On my ROR graph, there is a positive correlation. My data has proven to be reliable and I am therefore happy to use it courseqork make a justifiable conclusion that concentration does have an effect on rate of reaction.
This can be done by: My data reactioh precise because most of the points on my graphs are close to the line and are all close by each other. This could have happened because of calculation errors, human errors, recording errors or a fault with the equipment that we used. I used this to gauge when to stop thiosulphatee reaction — when the black x was obscured by the white sulphur precipitate, the timer was stopped.
The reaction gcse sodium reaction and HCL Length: Reactions that occur slowly have a low rate of reaction.
There are 2 outliers Improvements and further investigations: Skip to main content. This shows that as you increase the independent variable the concentrationthe other variable the time taken for the experimentwent down.
Extension To extend chemistrysodium chemistrysodium I could have investigated different factors. The results for 1, 2 and 4M keep showing outliers. I believe that when the most concentrated solution is used the reaction would be coursework coursework fastest.
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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. I reacton 6 different graphs for this investigation.