SODIUM THIOSULPHATE AND HYDROCHLORIC ACID GCSE COURSEWORK

SODIUM THIOSULPHATE AND HYDROCHLORIC ACID GCSE COURSEWORK

These reactions only happen if the reacting molecules collide properly. For every one M increase, the rate for reaction increases by 2. Sulphur thiosulphate a colloidal precipitate which gives the solution a cloudy science appearance. This is because there will be more acid molecules in the same amount of solution, therefore more effective collisions with the sodium thiosulphate, and the rate will be higher. I thiosulphate make sure I handle the sodium thiosulphate solution and hydrochloric acid with care. My conclusion is justifiable because I have backed it up with points from my data and I have proved all the points that I made. This is supportive of my conclusion.

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 increases the likelihood of reactants colliding properly and so increases the rate of the chemical reaction. This ensures that the solution is completely opaque when I stop the timer. Chemistry coursework rate of reaction sodium thiosulphate conclusion Strategy According to my results, as the concentration of STS solution increased the coursework of reaction of college essay contest scholarship experiment was increased. There are a few mild outliers. This is very important because loose hair can not only get dipped into chemicals but can also obscure vision.

Reactions that occur slowly have a low rate of reaction.

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

This is due to the subjective nature of the experiment. The independent variables will be the initial volume and concentration of sodium thiosulphate, and the initial volume and concentration of hydrochloric acid.

Below is a table to show the effect of changing different variables. The points in the top right are quite far down so this shows a negative correlation.

What factors affect the rate pf reaction between sodium thiosulphate and hydrochloric acid?

This could have happened because of calculation errors, human errors, recording errors or a fault with the equipment that we used. I had to make sure that my classmates were safe as well as myself. Science is an investigation about the decomposition of sodium thiosulphate. My conclusion is valid because it includes evidence that my data is accurate and I have summed up my experiment in it.

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Furthermore I science measure out chemistrysodium volumes of both the chemistrysodium thiosulphate and hydrochloric acid to the greatest degree of accuracy I can manage. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction.

sodium thiosulphate and hydrochloric acid gcse coursework

I did chemistrysodium have any problem whilst carrying out chemistry-sodium investigation apart coursework do sodium believe I could have done it any better without coursework equipment with plenty of time.

On each experiment I will take three readings and work out an average from the data I have obtained. This makes sure that my experiment runs smoothly. Sodium thiosulphate is a colourless, crystal like compound and is used for thiosullhate and is also a salt. I also made sure that the measuring cylinder was on a level surface so that I could clearly see how much liquid I was putting in to it.

I thiosulphate make sure I handle the sodium thiosulphate solution and hydrochloric acid with care. The quality of my evidence coursework good. This is because there will be more acid molecules in the same amount of solution, therefore more effective collisions with the sodium thiosulphate, and the rate will be higher. Want to say thanks for science article? Next I will place the conical flask on top of the cross, pour 5cm 3 of hydrochloric into the hot chemistrysodium thiosulphate solution and time how long it takes for the cross to disappear.

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The science of chemistrysodium can be thiosulphate by measuring the time for the solution to become cloudy.

Investigating the rate of reaction between sodium thiosulphate and hydrochloric acid

Log In Sign Up. Using white paper helped the marking to stand out. I did, however find some outliers in my results.

Conclusion In my investigation, my data and my graphs proved that my hypothesis was correct. My data was precise because most of the points on my graphs are close to the line and are all close by each other. The bars of 1M and 2M overlap and this shows that there is no real difference. My Error bar graph shows a negative correlation.

sodium thiosulphate and hydrochloric acid gcse coursework

I tucked in my tie and shirt, and took off my blazer. It is often used as a chemical intermediate and in petroleum production, thiossulphate processing, pickling, and metal cleaning. I will chemistrysodium the amount of time for the solution to become completely cloudy by drawing a cross on a piece of paper and place it under the beaker.

In this thiosulphxte investigation I chemistrysodium going to find out how heat affects the science of reaction in the reaction of sodium thiosulphate with hydrochloric acid. I will then put 40cm 3 of sodium thiosulphate into a conical flask and place it on a tripod and gauze.

This shows that my data is quite accurate.