An Experiment To Test The Reaction rates between sodium
Thiosulphate and Hydrochloric Acid.
Plan
I have begun an experiment to measure the rate of reaction between Thiosulphate and Hydrochloric acid the fact
that i am going to look at is concentration. I will dilute the thiosulphate with water to change the variable
concentration. My investigation will be situated in a school labratory. I will do at least five different concentrations
in duplicate. To help me complete my investigation I will need a conical flask, clock, 3 measuring cylinders and two
beakers which will contain the Sodium Thiosulphate and Hydrochloric acid, and a piece of white paper with a black
cross marked on it. To complete my investigation I will have to measure out 25ml of Hydrochloric acid in
measuring no.1, then pour it into the conical flask which has already been placed on the paper with an X marked on
it. Now I can measure out 25ml of sodium thiosulphate in measuring cylinder no.2 so I do not contaminate the 2
solutions before i have got everything ready. Now I will be ready to pour the sodium thiosulphate into the conical
flask and start the stop clock. Shortly after the chemicals have started to react the concentration should become
cloudy, so then I will not be able to see the X anymore, then I will stop the clock and mark down the time. Then I
Thiosulphate and Hydrochloric Acid.
Plan
I have begun an experiment to measure the rate of reaction between Thiosulphate and Hydrochloric acid the fact
that i am going to look at is concentration. I will dilute the thiosulphate with water to change the variable
concentration. My investigation will be situated in a school labratory. I will do at least five different concentrations
in duplicate. To help me complete my investigation I will need a conical flask, clock, 3 measuring cylinders and two
beakers which will contain the Sodium Thiosulphate and Hydrochloric acid, and a piece of white paper with a black
cross marked on it. To complete my investigation I will have to measure out 25ml of Hydrochloric acid in
measuring no.1, then pour it into the conical flask which has already been placed on the paper with an X marked on
it. Now I can measure out 25ml of sodium thiosulphate in measuring cylinder no.2 so I do not contaminate the 2
solutions before i have got everything ready. Now I will be ready to pour the sodium thiosulphate into the conical
flask and start the stop clock. Shortly after the chemicals have started to react the concentration should become
cloudy, so then I will not be able to see the X anymore, then I will stop the clock and mark down the time. Then I