Chemistry rate reaction coursework sodium thiosulphate

I am, however due to my line of enquiry, going to change the temperature of the solution. This altogether led to a decrease in the time taken for the reaction to happen.

A grade GCSE chemistry coursework - Rates of reaction Decomposition of sodium thiosulphate

This is very important because loose hair can not only get dipped into chemicals but can also obscure vision. There were no points on my scatter graph that were not on or close to the line of best fit. The variable I changed was the volume of STS and the volume of water. The curve does not touch the x-axis at the higher end, because there will always be mom particles with very high energies.

Also many other variables affect the collision rate to increase such as Catalysts and temperature etc. Also safety was equally important to the investigation.

I am investigating the different factors which may speed up chemical reactions. Limitations My limitations could have been: Similarly the use of a catalyst complicates things, and if used incorrectly could alter the outcome Sorry, but full essay samples are available only for registered users Choose a Membership Plan of the experiment.

Chemistry Gcse Coursework Rates of Reaction

In comparison to my preliminary results I can see some similarities between the concentration types of the STS solution. The bars of 1M and 2M overlap and this shows that there is no real difference.

I have calculated the gradient of my line to support my hypothesis and found that: A gauze and heatproof mat will be used while heating to avoid any damage to the equipment. From this evidence I believe my results were very reliable.

Chemistry rate of reaction coursework

This shows that as you increase the independent variable the concentrationthe other variable the time taken for the experimentwent down. Results Below is a table showing my results from the main investigation I can see from observing the table that the first part of my prediction was correct.

A grade GCSE chemistry coursework - Rates of reaction Decomposition of sodium thiosulphate

The state symbol for sulphur dioxide is aq not g because it is dissolved in water as its original state would be too toxic and corrosive for me to use safely.

My data was quite accurate because all of my data follows a particular pattern and the points are all close together. The minimum energy that a particle must have to overcome the barrier is called the activation energy, or EAI.

The range of my results were also suitable to make good observations and conclusions By comparing the repeated times on each of the experiments I can see that they were similar and each one was within two seconds of each repeat. On each experiment I will take three readings and work out an average from the data I have obtained.

This means that both graphs drawn up in my analysis will have positive correlation, and will probably be curved as the increase in rate of reaction ill not be exactly the same as the counterrevolutionaries is increased.

PREDICTION: As the concentration of Sodium Thiosulphate increases the length of time for cross to disappear decreases (inverse). This is because the increase of concentration of Sodium Thiosulphate will increase the rate of reaction between Hydrochloric acid and sodium Thiosulphate particles.

Investigating how the concentration of sodium-thiosulphate (STS) and hydrochloric acid (HCL) affects the rate of reaction in the experiment. In addition I am also checking how different variables affect my experiment and also how I can make my test more precise, reliable and accurate.

When hydrochloric acid and sodium thiosulphate react, the solution turns cloudy. You can measure the rate of the reaction by altering the concentration of sodium thiosulphate and measuring the time it takes for the solution to turn fully opaque. The rate of reaction is the rate of loss of a reactant or the rate of formation off product during a chemical reaction.

It is measured by dividing 1 by the time Continue reading "GCSE Chemistry – Sodium Thiosulphate Coursework Essay". 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.

When the concentration of Sodium thiosulphate was increased the rate of reaction increased and the time taken to reach equilibrium decreased, so therefore the rate of reaction .

Chemistry rate reaction coursework sodium thiosulphate
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Rates Of Reaction Coursework Sodium Thiosulphate - - IBD Awareness