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AIM: I intend to conduct an experiment on the effect the concentration of the hydrochloric acid has on the rate of reaction between it and Sodium Thiosulphate. ... I will be altering the variable of concentration of sodium thiosulphate solution, the other variables are changing temperature, or changing the surface area of a solid reactant, or adding a catalyst. ...
Fair Test:
I plan to do a safe and fair investigation into the effect of concentration on the rate of reaction of sodium thiosulphate with hydrochloric acid. I will use safety goggles and gloves to protect my skin from the acid and to protect my eyes from any splatter. ... For the test to be fair I will use the same volume of thiosulphate and acid throughout the test. ... the setting of the stop clock) so as not to increase the rate of the reaction unwittingly. I will also make sure that the conical flask containing the reactants are not disturbed because the movement could speed up the reaction. ...
Equipment:
Safety Goggles
Gloves
1M Sodium Thiosulphate Solution
0.5M Hydrochloric Acid
100cm3 Conical Flask
2 x 50cm3 Plastic Measuring Cylinder
2 x 50cm3 Glass Measuring Beaker
Stop Clock
White Sheet of Paper with a Cross in the centre
Labels
Method:
Firstly for the different concentrations of Sodium Thiosulphate solution I manually diluted it. To do this I had 100cm3 of the 2 Molar Sodium Thiosulphate. ... So with 100cm3 of 1 Molar Sodium Thiosulphate in the second beaker I poured 50cm3 of that into a third beaker I again added 50cm3 of water to the third beaker and it resulted in a 100cm3 0.
Approximate Word count = 1286
Approximate Pages = 5.1
(250 words per page double spaced)
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