Diagram of Apparatus
Introduction
Risk Assessment `
Table of Results
Line of Best Fit Graph
Error Bars Graph
Gradients Graph
Analysis
• Error Bars Analysis
Evaluation
• Improvement Assessment • Improved Experiment. • Reliability
References
Introduction:
For this data analysis project, I conducted and experiment to investigate how the concentration of an acid affects the rate of the reaction. I have set up the experiment’s equipment as shown on figure 1. As you can see by figure 1, I have used the reaction between sodium thisoulphate solution and hydrochloric acid (HCL) to come up with results that will help me draw conclusions regarding the effects of the concentration of the acid. I decided to use this particular reaction due to the fact that the product of the reaction between sodium thisoulphate and hydrochloric acid (HCL) is precipitates of sulphur which tend to turn the solution cloudy. As a result, the cross beneath the conical flask (see figure 1) would disappear/ become difficult to be seen when the reaction has taken place. Therefore, the idea is that 50 cm³ of sodium thisoulphate are made to react with 5 cm³ of hydrochloric acid that is of different concentration each time. The concentrations of hydrochloric acid used varied from 0.1 to 5 moles. Afterwards, the cross is observed through the top of the conical flask until it because invisible. The time of which this happens is then recorded and monitored using a stopwatch. The symbol equation of this reaction is as follows:
The above symbol equation shows the reaction: Sodium thisoulphate reacts with hydrochloric acid to form sodium chloride, water, precipitate of sulphur as well as sulphur dioxide. The results that I recorded from this experiment were poor. This is because they were not