This causes a quicker reaction. Also as the concentration of STS solution decreased, the time of reaction increased. Furthermore a colorimeter will be used to judge when the reaction has been completed. In my investigation, there was the limitation of room temperature. I am very confident with my results and I can feel that my investigation was very precise, accurate and my results were extremely reliable.
These reactions only happen if the reacting molecules collide properly. Interpreting Data What I notice in my results was that as the concentration of STS kept on increasing the time take for the solution to get cloudy was decreasing.
The solutions will then be judged according to the same standard. The method I used to carry out my experiment was very reliable. This is because they are the most practical to investigate — it would take longer to prepare a solid in powdered and unprepared form, and it is difficult to get accurate readings due to the inevitabilities of human errors, and as gas is mostly colorless it is difficult to gauge a reaction changing the pressure, and If a substance Is added to give the gas color, It may Influence the outcome of the experiment.
Similarly my real experiment was done very precisely such as calculating or measuring the results or measuring the amount of solution in each beaker etc. I will also be careful when heating up the solutions and will at all times wear safety goggles and also remain standing throughout the experiment.
Although no obvious anomalies can be identified, the three tests, whilst behaving according to similar trends, vary in results and in reaction times.
Concentration — If the concentration of a solution is increased there are more reactant particles per unit volume. It is measured by dividing 1 by the time taken for the reaction to take place.
For every one M increase, the rate for reaction increases by 2. This is because when the temperature is increased the particles will have more energy and thus move faster.
Strategy According to my results, as the concentration of STS solution increased the rate of reaction of my experiment was increased. If the frequency of collisions is increased the rate of reaction will increase. As a result there will be particles with differing energies.
A gauze and heatproof mat will be used while heating to avoid any damage to the equipment. Evaluation All of my results were accurate and fitted the pattern of results.
Years 9, 10 and My data was precise because most of the points on my graphs are close to the line and are all close by each other. I will be timing and watching: I then drew up graphs for my results Data Concentration Test Test 2 Test 3 M 1 s s s 1 2 3 4 5 Table 1: Give a detailed outline of any further work that could provide additional evidence for your conclusion.
This increases the concentration and thus the rate of reaction. How reliable are your results? When the mixture has turned sufficiently cloudy so that the letter X can no longer be seen the stopwatch will be stopped and the time will be recorded.
The minimum energy that a particle must have to overcome the barrier is called the activation energy, or EAI.10 | P a g e Anjelina Qureshi Mrs Gravell Rates of Reaction Coursework Chemistry Year 11 All of my research into rates of reaction has indicated that my prediction is correct.
I have used reliable resources to research this information and it all confirms my conclusion.
Chemistry Coursework Planning Aim: To find the effect of concentration of thiosulphate on the rate of reaction between sodium thiosulphate and hydrochloric acid. Introduction: Word Equation for the reaction: Balanced Symbol Equation for the reaction: Observations during the reaction: • A yellow precipitate of Sulphur starts to form and the reaction mixture goes cloudy.
Sodium Thiosulphate CourseworkThe Coursework on Concentration Of Acid Reaction Magnesium Rate. 5 cm of HCl (at concentration 1 mol. /dm3) and 15 cm of sodium thiosulphate (at varying concentrations 10 to 35 g/dm3) are poured out into two measuring cylinders. the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate Chemistry Coursework How Concentration Affects a Reaction Aim: The aim of this experiment is to find out how concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate.
3 Rates of reactions science (chemistry) coursework My coursework is based on rates of reaction. This deals with the time taken for reactants to be changed into.
- The Reaction of Sodium Thiosulphate with Hydrochloric Acid Plan ==== I am going to investigate the rates of reaction when sodium thiosulphate reacts with hydrochloric acid. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction.Download