Wednesday, May 29, 2019

Investigating the effect of Temperature on the reaction between Sodium Thiosuphate and hydrochloric acid :: GCSE Chemistry Coursework Investigation

Investigating the effect of Temperature on the reaction between atomic number 11 Thiosuphate and hydrochloric paneling PlanningI am investigating the different temperatures on the reaction betweenSodium Thiosuphate and Hydrochloric acid.The factors I could investigate would be temperature, concentrationand substances. I have chosen to investigate Temperature.I predict that the higher the temperature the to a greater extent rapidly the crosswould obscure. This is because the higher the temperature the moreoften the particles collide and react, when the particles collide moreoften they would collide harder because they have more energy, makingthe strikes bigger and faster, the collision success rate ishigher.I will eviscerate my investigation a fair test by keeping the quantities ofthe Hydrochloric acid at room temperature and Sodium Thiosuphateheated as accurate as possible. Also make sure the stop clock isstarted at the same point each time a measurement is taken.I will carry out the investigation by1. Set up the Diagram2. Put the test tubes of Sodium Thiosuphate into the beaker above the bunsen burner burner3. Put a thermometer into it4. Remove the test tube once its reached the desired temperature and pour contence into the empty beaker5. As you begin to pour the test tube of Hydrochloric superman contence into the beaker start the stop clock6. When the cross on the paper becomes obscured stop the clock and record the result7. Rinse out the beaker where the reaction took place8. double over with five different temperatures, using ice to cool down the Sodium Thiosuphate, and repeat it all twice.The equipment I will use is Hydrochloric acid Sodium Thiosuphate 2 x Measuring cylinders 2 x Test tubes stop clock 2 glass beakers 2 thermometers Bunsen burner water tripod heat mat imagine paper with pencil crossI will make sure my results are accurate by referring to graphs, e.g.if one point is greatly out of alignment, it should be repeated.Also I wi ll make sure that the meniscus of the hydrochloric acid andThiosuphate is flat and not to one side of the test tube or measurementcylinder.I will take five measurements with a 10 gap interval and I will repeatthis twice and take an average to make my results more accurate.Back ground Research - Trial ExperimentI conducted a trial experiment to find out the correct quantities ofsodium thiosulphate and hydrochloric acid for the main experiment. Wewere aiming for the cross to disappear in around one minute.We found the more hydrochloric acid the slower the X disappeared.

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