Hypothesis: In the probe of the array of reaction and tautness of Sodium Thiosulphate. I name that the higher the concentration of sodium thiosulphate result, the faster the rate of reaction because if the solution is made much concentrated it mode there are particles of reactant knocking about between the piddle molecules. This makes collisions between the important particles, more likely. I also predict the sulphur precipitate depart cycle the solution a cloudy yellow and will mordant the cross x. Apparatus: - Goggles - check clock - 250cm3 conic flask - 10cm3 measuring cylinder - 50cm3 measuring cylinder - 0.1m sodium thiosulphate solution - 2m hydrochloric acid - Teat pipette Practical: - insert the apparatus and set it up. - Mea reliable out 10cm3 of Na2S2O3 and 40cm3 of water in a measuring cylinder. - stream solution into a conelike flask. - Measure out 10cm3 of HCL3 into a 10cm3 measuring cylinder - Pour the HCL2 into the conical flask with dilute Na2S 2O3 straightway the HCL2 is poured start the demote clock. - fiddle with the flask - As the solution becomes cloudy the laminated cruddy cross will slowly but surely disappear. - When the black cross disappears stop the stop clock. - Record the results. - Repeat the test changing the get of H2O and Na2S2O3. - Do not deepen the amount of HCL2.
ie, 20cm3 Na2S2O3 30cm3 HCL2 To 50cm3 Na2S2O3 Â Â Â Â Â Â Â Â 0cm3 HCL2 Fair audition: In rescript for my investigation to be a fair turn up I will drop to carry out the next corrections: 1. To use the same amou nt of HCL2 2. Make sure the solution is the ! same volume 3. Start the clock immediately when all(a) the solutions have been handed in. 4. Then stop the clock immediately when the x disappears. If you want to get a full essay, order it on our website:
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