The effects of change in concentration on the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid words – 7 pages cm3 of water will be added to complete the solution. 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. This increases the likelihood of reactants colliding properly and so increases the rate of the chemical reaction. This causes a quicker reaction. I would also consider using a wider range of concentrations so I can do in-depth analysis and I can compare the two acids.

These must be clearly recorded in neat tables showing all conclusion units e. The acid is poured into the flask which has the sodium thiosulphate solution in it. Investigating the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid words – 7 pages predicted, the more concentrated solutions reacted more quickly than the weaker ones. I wrote down my results and then moved on to the next concentration of sodium thiosulphate. Apparatus1 small measuring cylinder1 large measuring cylinder1 small beaker1 large beakerHydrochloric AcidSodium ThiosulphateCross drawn on paperConical flaskWaterStopclockMethodFirst of all we measured out 25cm3 acid and 25cm3 sodium thiosulphate. Activation energy is released when the particles hit each other and whether the collision is successful or not is dependant on the amount of activation energy present. We did 4 experiments to find out how the rate of reaction changes with differing concentrations of Sodium Thiosulphate, Hydrochloric Acid and water.

sodium thiosulphate and hydrochloric acid coursework evaluation

Enthalpy Enthalpy, in chemistry, is skdium heat content in a chemical reaction. In this investigation I will be varying the concentration of Sodium Thiosulphate only and not the Hydrochloric acid concentration.


Sodium thiosulphate and hydrochloric acid coursework conclusion – Analysis of Reducing Sugars

Introduction On the advanced gas calculations pagechemistry-sodium sources of error and their correction are discussed in calculation example Q4b. Help Center Find new research papers in: The rate of reaction is the speed of a reaction.

In order to perform the experiment, the following Apparatus must be used: The hydrochlroic is poured into the flask which has the sodium thiosulphate solution in it. Introduction Evaluating – and how good are your results then?

sodium thiosulphate and hydrochloric acid coursework evaluation

The graph obtained from the results has a strong resemblance to the one in the prediction. Skip to main content. Log In Sign Up. Reducing sugar is present in the solution A. Coursework about sodium thiosulphate and hydrochloric acid.

Investigation Of Sodium Thiosulphate And Hydrochloric Acid – Essay – Words – BrightKite

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: This theory states that in order for a reaction to occur, the particles of each reactant must collide together, with successful collisions resulting in chemical changes.

Hydrochloric hydrochloriic is colourless, poisonous and highly acidic.

Measuring rate … … Pressure effect … Rate of reaction … Reaction profiles Nobody osdium my group was asthmatic but if they were, I would have carried hydrpchloric the experiment near a window or in a fume cupboard.

Conclusion In my investigation, my data and my graphs proved that my hypothesis was correct. Other factors which may speed up chemical reaction are: Hydrochlooric example, rusting is a slow reaction; it has a low rate of reaction. The reaction that will be taking place will follow the rate at which sulphur is formed in the reaction of sodium thiosulphate with dilute hydrochloric acid. Inhalation of the solution was avoided as was contact with skin.


We are trying to find out the affect of acid concentration on the rate of reaction, we are using 2, 1. I made sure that I had everything before I started. I tucked in my tie and shirt, and took off my blazer. Variables An independent variable is one that is controlled by me, for example; the temperature, thiosulphxte time limit and mixing speed.

Investigating the rate of reaction between sodium thiosulphate and hydrochloric acid

Enlightenment for Chinese companies’ globalization Essay. VariablesI changed the concentration of the hydrochloric acid by adding water to it. The lower the concentration, the fewer particles there are to collide with each other, slowing down the rate of reaction.

The experiment had no outliers Concentration increase speeds up a reaction because there are more particles to collide with each other, therefore creating more of a possibility of a faster reaction.

Rates of reaction of Sodium Thiosulphate with Hydrochloric Acid

I am going to investigate how the concentration of the acid effects the speed of the reaction. I would anx different trials on sulphuric acid and nitric acid. In the experiment the sulphur will appear as an extremely fine precipitate. Keep the size of my measuring flask is the same size; this should hopefully make my experiment much fairer and accurate.