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preliminary results Here is the word and symbol equation for the reaction: Sodium + Hydrochloric Sulphur + Sulphur + Water + Sodium Thiosulphate acid Dioxide Chloride
rate of reaction Preliminary results I will gather some preliminary results to produce better final results; this will create a better accuracy in my final results
into the cell as the solution has a higher water potential than the potato cell. From my preliminary results I can see that at concentrations of 0.0M and 0.2M of
This experiment has two sections which have to be carried out in order to get the correct results: Preliminary work: Find out which wire is the best insulator? Main
quarter of 2008, a 16 percent increase from the second quarter of 2007, according to preliminary results by Gartner, Inc. "Mobile PCs continued to lead unit growth
Submitted by damsell on January 30, 2007
Category: Science
Words: 422 | Pages: 2
Views: 177
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Here is the word and symbol equation for the reaction:
Sodium + Hydrochloric Sulphur + Sulphur + Water + Sodium
Thiosulphate acid Dioxide Chloride
Na2S2O3 + 2HCl S + SO2 + H2O + 2NaCl
As you can see from the word equation there are a lot of bonds to break in this experiment so the more "HCl's" there are the quicker it will be to break the Sodium Thiosulphate. You can also see that two "HCl's" are needed to successfully break down one Sodium Thiosulphate molecule. So this would mean that the more "HCl's" the better. So for my experiment I will create five different measurements of Hydrochloric acid (0.1M-0.5M in steps of 0.1M) and react it with Sodium Thiosulphate and time how long it takes for the "X" to disappear under the beaker. I will always use 50ml3 Sodium Thiosulphate and 5ml3 Hydrochloric acid. I will then record my results onto a table and then on to a graph. To make my experiment I will measure the time to two decimal places and I will measure the quantity of Sodium Thiosulphate with a measuring cylinder and the Hydrochloric acid with a Pipette. I will also do three trials for each measurement to make it more reliable. To ensure my safety in this experiment I will wear goggles and avoid touching the acid.
In this experiment I predict that when I increase the concentration of Hydrochloric acid the rate of reaction will increase. This is because at low concentration there are less particles to collide whereas at high concentration there are lots more particles to collide i.e. if there is a reaction where 100 successful collisions have to occur for the reaction to be complete and you only have ten particles, it will take a lot longer than if you had 100 particles to collide. If you increased the concentration of the reactants, the frequency of the collisions will also increase. This is the "collision theory". The "kinetic theory" is also apparent in this...
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