This should involve a different method to obtain results E6b. Fair test To make the investigation is a fair test I made sure: At the start of the practical only some of the reactions will have enough energy to strike with each other and create energy for the reaction to happen. From looking at the curve of best fit for the average results.
A clear pattern has emerged from the data and this pattern was repeatable. The rate of reaction i. The stop watch could have been faulty — the button might not have been working well and may not have stopped the timer when I pressed it.
So this means the particles will be moving around more and therefore they are more likely to collide with each other. Distractions — I may have been distracted by something such as a loud noise and I might have looked away at the exact moment that the X disappeared.
My method worked well because I was able to get a set of results at the end. The undermentioned decisions can hence be drawn: So that me and my classmates where safe. I, therefore, predict that with the acid concentration decreasing, it will take longer for the cross to disappear.
To get the better of the restrictions and give more accurate consequences, we can modify the experiment in the undermentioned ways: This means there is more likely to be more collisions because they is more particles with in a small space.
I am keeping the same concentration of thiosulphate but I will change the concentration of the acid by diluting it with water. A prediction matches up very closely. For example, In the average result, when the volume of sodium thiosulphate is 10cm3, the time taken is sec.
These results are plotted on graph 2 overleaf Analysis The faster a reaction takes place, the shorter is the time needed for the reaction to finish. This theory is called Collision Theory.
So then you can see if different concentration will make the rate of reaction change. The closer together they are, the more often the Sodium Thiosulphate ions and Hydrochloric Acid ions collide.
The stop watch could have been faulty — the button might not have been working well and may not have stopped the timer when I pressed it. Another one is the concentration because by increasing the concentration of a reactant we are increasing the number of particles in a certain volume.
First the amount quantity of data collected will be increased and this will be done in two ways: Another one could be a catalyst because this is a lower activation energy required by particles to start a reaction and provides another route for the reaction to occur, thus speeding up the reaction.
This means there is more likely to be more collisions because they is more particles with in a small space. So if we change the concentration of the experiment we are increasing the number of practices inside the reactions.
The reaction clip when fillet and get downing the stop watch besides added to the inaccuracy particularly when the clip periods are truly little. We can increase the rate of reaction by changing specific conditions in order to increase the rate of collision what will happen is that one of the things what can change it is the temperature because it provides the reactant with more energy.
Increase of concentrate in the same volume means that more particles are present and therefore, more frequent collisions are likely to occur. Same volume of solution — total volumes need to be the same. Then place them two in the same beaker and put the paper with the cross on it on the back with the cross facing towards you.
The controlled variable was the amount of hydrochloric acid contraction must be the same. The controlled variable was the amount of hydrochloric acid contraction must be the same. The temperature is kept the same. The experiment must be carried out at a distance from the air-conditioner to forestall rapid chilling of the solutions and keep a changeless temperature.
This is due to the subjective nature of the experiment. Decomposition of sodium thiosulphate Aim: The aim or purpose of this investigation is to explain how concentration affects the rate of reaction (the decomposition of sodium.
The Effect of Different Concentrations of HCl on the Rate of Reaction Between HCl and Sodium Thiosulfate Chemistry Lab report Aim: The aim of this experiment is to determine how concentrations of HCl acid affect the rate of reaction when reacted with Sodium Thiosulfate (Na2S2O3).
Chemistry Rates of Reaction Coursework: Sodium thiosulphate and hydrochloric acid Simple Procedure Place a conical flask on a piece of paper with a cross on it. Add hydrochloric acid and sodium thiosulphate, and record the amount of time taken for the cross to disappear through the solution from the top of the flask.
The rate of reaction between sodium thiosulphate and hydrochloric acid Candidate name: Yeo Jin Kim (Kimberly Kim) Candidate number: Teacher: Yitao Duan Aim The aim of this experiment is to investigate the changing of concentration effect the rate of reaction between sodium thiosulphate and hydrochloride.
- Sodium Thiosulphate and Hydrochloric Acid Reaction Investigation Aim To see the effects of concentration on the rate of a reaction between sodium thiosulphate and hydrochloric acid.
Background information The collision theory briefly: For a reaction to occur particles have to collide with each other. Rates of Reaction Experiment HCl and Sodium Thiosulphate Essay Sample The rate of reactions is how fast something changes from its reactants to its products.
For a reactions to occur, the particles must strike with enough energy.Rates of reaction experiment hcl and sodium thiosulphate essay