Sam Austin
Aim: An experiment to determine if changing the concentration of a reactant alters the rate of reaction.
Plan and Method
In the experiment we are going to undertake, we have to add to concentrates into a chronicle flask that have been very carefully measured to 10ml. These two concentrates are hydrochloric acid and Sodium Thiosulphate. When these two concentrates interact the solution slowly turns a white colour and when left long enough a faint yellow colour. Just as we place the two concentrates into the flask we begin timing to see how long it takes for the small black cross under the flask to disappear. Then we record the results onto a table. With in the experiment we will use 8 different concentrates these are 0.05, 0.1, 0.15, 0.2, 0.25, 0.3 and 0.4.
The equation for this experiment is:
Hydrochloric Acid -> Sodium Thiosulpahte -> Sulphur + Sodium Chloride + Water
We can tell when the reaction ends because the precipitate has stopped forming.......
Join Now or Login to view the rest of this paper.
Approximate Word Count: 523
Approximate Pages: 3 (260 words per double-spaced page) |