CHEMISTRY COURSEWORK SODIUM THIOSULPHATE HYDROCHLORIC ACID

CHEMISTRY COURSEWORK SODIUM THIOSULPHATE HYDROCHLORIC ACID

This fits in with my hypothesis and my data. This causes a quicker reaction. 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: I decided that it would be best for me to use a bold marker pen to make the mark more visible under the conical flask. I am investigating the different factors which may speed up chemical reactions.

I did have some outliers in my results; however I think that the experiment went fairly well overall. Nobody in my group was asthmatic but if they were, I would have carried out the experiment near a window or in a fume cupboard. The room temperature could have affected my reaction and this could be the reason that I have some outliers. My data was precise because most of the points on my graphs are close to the line and are all close by each other. Hydrochloric acid is colourless, poisonous and highly acidic.

If I was using solids, I could investigate surface area and for gases I could investigate pressure In concentration I looked at five different concentration of HCl The volume of HCl stayed the same; also the volume of sodium thiosulphate stayed the same, the concentration of sodium thiosulphate stayed the same. And supports my conclusion. I also made sure that the measuring cylinder was on a level surface so that I could clearly see yhiosulphate much liquid I was putting in to it.

Help Center Find new research papers in: My data has proven to be reliable and I am therefore happy to use it to make a justifiable conclusion that concentration does have an effect on rate of reaction. There is one outlier in 2M concentration.

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Dependent variables are not controlled by the experimenter. Rate of Reaction and Specific Rate Constant. Burning and explosions are thiosul;hate fast reactions: This is supportive of my conclusion.

chemistry coursework sodium thiosulphate hydrochloric acid

I have calculated the gradient of my line to support my hypothesis and found that: I tied hyvrochloric hair back, tucked in my tie and pushed all stools and bags under the desk where there is no risk of anyone tripping.

Sodium Thiosulphate in Hydrochloric Acid.

Rates of reaction of Sodium Thiosulphate with Hydrochloric Acid

I am investigating the different factors which may speed up chemical reactions. The bars thiouslphate 3M, 4m and 5M do not overlap. This fits in with my hypothesis and my data.

This is the reaction I will be considering: In my investigation, there was the limitation of room temperature. This good because it shows that for every increase in concentration is a decrease in rate of reaction. I used this to gauge when to stop the reaction — when the black x was obscured by the white sulphur precipitate, the timer cuemistry stopped.

chemistry coursework sodium thiosulphate hydrochloric acid

This shows that there is a difference in the data which proves accuracy. This makes sure that my experiment runs smoothly. 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.

Sodium thiosulphate is a colourless, crystal like compound and is used for dyes and is also a salt. These two acids react well with the right sodijm. I did not swirl these together because I wanted to see the rate of reaction without any intervention.

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The reaction between Sodium Thiosulphate and Hydrochloric Acid.

In my scatter graph with line of best fit, most of the points are close to the line. These chemicals are perfect for my investigation because they are both clear and colourless. If I do a further hydrochlloric, I will try to minimise the number of mistakes that I make. The bars of 1M and 2M overlap and this shows that there is no real difference.

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

I decided that it would be best for me to use a bold marker pen to make the mark more visible under the conical flask. My Error bar graph shows a negative correlation. Reactions that happen quickly have a high rate of reaction. Skip to main content. Background Research Chemical reactions are to do with changing the materials that form the base of your experiment.