Rates of Reaction Investigation :: Papers

Rates of Reaction Investigation You are to plan obtained evidence, correctly presented and intention it to draw conclusions and evaluate your work. You are to study the effect of concentration on the reaction of hydrochloric acid and sodium Thiosulphate. This reaction produces a white lusty witch clouds the mixture. (The scientific word for this is precipitate.) The gas sulphur dioxide is produced. Prediction I predict that as the body of water dilutes the volume of the thiosulphate, it will take monthlong for it to change into a cloudy mixture. Explanation The reason why a fink this is because, the lower the concentration the less particles there are to clash with each other. Therefore the rate will be slower in a given time. The reason for this is because the particles are more spaced extinct throughout the solvent. Equipment 1 Stop clock 2 Conical flask 3 Sodium Thiosulphate 4 Hydrochloric acid 5 Black X on a art object of paper 6 Water 7 Thermometer 8 Measuring cylinders x3 9 Glass beakers x2 To make this a funfair test I will keep the hydrochloric acid the same throughout. rule 1 Collect the equipment and label the beakers ect. So they dont pop off mixed up and ruin the test. 2 Get a piece of paper mark and X and make it look bold so it stands out. Then put the conical flask over it. 3 For the head start experiment put 50 ml3 of thiosulphate 10 ml3 of hydrochloric acid and 10 ml3 of water into the conical flask. Repeat the experiment like shown on the results table. 4 wampum stopwatch, and mix the contents of the conical flask 10 times in an anticlockwise direction. 5 When the solution turns cloudy, so that you cant find the X stop the stopwatch and record the time. 6 Check and oblige the temperature to make a fair test. Risk Assessment =============== The first affaire I am going to do is look up each the possible dangers