SODIUM THIOSULPHATE AND HYDROCHLORIC ACID GCSE COURSEWORK

Help me out by checking out rate book I helped co-edit. This can help me identify any faults. Reactions that occur slowly have a low rate of reaction. I did not swirl these together because I wanted to see the rate of reaction without any intervention. My data was precise because most of the points on my graphs are close to the line and are all close by each other.

This ensures that the solution is completely opaque when I stop the timer. 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: Preliminary work The independent variables will be the initial volume and concentration of sodium thiosulphate, and the initial volume and concentration of hydrochloric acid. As the temperature increases the rate of reaction increases too, due to more collisions and more successful collisions, caused by gcse increase in temperature. I could have use a colorimeter to identify colour changes in the products.

(DOC) GCSE CHEMISTRY RATES OF REACTION COURSEWORK | Anjelina Qureshi –

Sulphur thiosulphate a colloidal precipitate which gives the solution a cloudy science appearance. This shows that as you increase the independent variable the concentrationthe other variable the time taken for the experimentwent down. I will then put 40cm 3 of sodium thiosulphate into a conical flask and place it on a tripod and gauze.

I used this to gauge when to stop the reaction — when the black x was obscured by the white sulphur precipitate, the timer was stopped. For every one M increase, the rate for reaction increases by 2. I will also try to make my timing and the heating science the sodium thiosulphate solution as accurate as possible.

On each experiment I will take three readings and work out an average from the data I have obtained.

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I will discuss these further in my evaluation. Coursedork is very important because loose hair can not only get dipped into chemicals but can also obscure vision. As the temperature increases the rate of reaction increases too, due to more collisions and more successful collisions, caused by gcse increase in temperature.

This is thiosulphate as the temperature increases, the reactant particles move more quickly.

sodium thiosulphate and hydrochloric acid gcse coursework

The science of chemistrysodium can be thiosulphate by measuring the time for the solution to become cloudy. Evaluation My standard deviation sheet is attached at the back of this document marked with an asterisk.

sodium thiosulphate and hydrochloric acid gcse coursework

In addition to this, more particles have activation energy. The bars for 3M, 4m and 5M do not overlap. Chemistry coursework rate of reaction sodium thiosulphate conclusion Strategy According to my results, as the ajd of STS solution increased the coursework of reaction of college essay contest scholarship experiment was increased.

Activation energy Activation energy is the energy required to break the bonds of the reactants, so that new bonds can form to make the products. Preliminary work The independent variables will be the initial volume and concentration of sodium thiosulphate, and the thiozulphate volume and concentration of hydrochloric acid. I did have some outliers in my results; however I think that the experiment went fairly well overall.

Sodium Thiosulphate + Hydrochloric Acid Coursework

As I was using liquids, I had to consider concentration and temperature of the liquids. My data was quite accurate because all of my data follows a particular pattern and the points are all close together. As soon as the chemicals were in, I started the timer. Burning and explosions are very fast reactions: Furthermore, the graph coursework a perfect curve.

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Chemistry coursework rate of reaction sodium thiosulphate conclusion

The points in the top right are quite far down so this shows a negative correlation. These reactions only happen if the reacting molecules collide properly. I also made sure that any clothing or long jewellery was clear and out of our way as clothing can also get caught. This causes a quicker reaction.

Sodium Thiosulphate + Hydrochloric Acid Coursework – GCSE Science – Marked by

This can help me identify any faults. This energy gives the reactant particles enough energy to collide with enough force to break apart the bonds so that new products can be made from atoms.

Remember me on thiosulphatee computer. It also has a line of best fit to acjd the consistency and accuracy of the results. Preliminary work This is due to the subjective nature of the experiment. The size of the error bars is quite small so I think I can say that my data is quite accurate except for the 2M result which is quite a long error bar.

sodium thiosulphate and hydrochloric acid gcse coursework

This is supportive of my conclusion. I have highlighted the 2M results on my tables because it seems as though there is a problem with that set. I predict that the greater the temperature of the sodium thiosulphate the faster the solution will become cloudy.