Rates of Reaction - The concentration of hydrochloric acid and the rate of reaction with sodium theosulphate :: GCSE Chemistry Coursework Investigation

Rate of reply After doing my pilot run, i deal that my rule and apparatus usedshould be mostly the identicalApparatus - 1 conical flask- 1 lamenated x- 3 leaven tubes- 1 thermometer- 1 stop watch- 3 pipettesMethod 1. standard 10ml of 0.2mol/dm3 or 0.2moldm-3 atomic number 11 thiosulphate2. Pour it into the conical flask3. Add 40ml of distilled water system for dillution.4. Then ply 5cm3 of dilute hydrochloric paneling of concentration 2mol/dm3 at board temperature 5. Record the temperature of the mixture. push mixture gently.6. Stir mixture gently7. sop up time when entirely is stirred and when the conical flask is over the X paper.8. erst the cross is all out of sight due to the reactionof the sodium thiosulphate and hydrochloric acid and then get in the time.9. I willl then repeat this with different measurements of sodium thiosulphate and water.Changes I meet made and why- I am non going to be victimization a burette because after application mypilot ru n, i realised that i was gradually getting much and more rat schedule and I wouldnt have replete time to bring to pass myobtaining evidence if I were to carry on using it.Fair block outTo make sure it was a carnival test. i had to perpetually trammel cleaning andwashing the equipmentas any remaining substances weed cause majordifferences in the results. And we had to try ansd hope that the roomtemperature will remain constant during the course of my experiment.Also we eternally have to backing the volume of concentrstion the aforesaid(prenominal) -55ml.number and range of experiments- If I have abundant time, I would resembling to try around nine different concentrations of sodium thiosulphate with water. I am going to try hte following volumes of sodium thiosulphate 10ml, 15ml, 20ml, 25ml, 30ml,35ml, 40ml,45ml and 50ml.- I have elect a range of 40ml as I think this is enough to rightfully experience the various actions of sodium thiosulphate reacting with h ydrochloric acid.- If any of my results await somewhat innaccurate or faulty, I will try my best to make over them.Safety- possess sure to tie hair back.- intermit a lab coat.- Wear safety glasses or goggles.- Wash grant in surrounded by each experimewnt and after anmd before eating.- Open windows so the smell isnt as well overwhelmingDillutionsTo make my experiment a fair test, we must always have the same volumeof solutions, 55ml.Rates of Reaction - The concentration of hydrochloric acid and the rate of reaction with sodium theosulphate GCSE Chemistry Coursework investigatingRate of Reaction After doing my pilot run, i think that my method and apparatus usedshould be mostly the sameApparatus - 1 conical flask- 1 lamenated x- 3 test tubes- 1 thermometer- 1 stop watch- 3 pipettesMethod 1. Measure 10ml of 0.2mol/dm3 or 0.2moldm-3 sodium thiosulphate2. Pour it into the conical flask3. Add 40ml of distilled water for dillution.4. Then add 5cm3 of dilute hydrochloric acid o f concentration 2mol/dm3 at room temperature 5. Record the temperature of the mixture. Stir mixture gently.6. Stir mixture gently7. Start time when all is stirred and when the conical flask is over the X paper.8. Once the cross is completely out of sight due to the reactionof the sodium thiosulphate and hydrochloric acid and then record the time.9. I willl then repeat this with different measurements of sodium thiosulphate and water.Changes I have made and why- I am not going to be using a burette because after finishing mypilot run, i realised that i was gradually getting more and morebehind schedule and I wouldnt have enough time to complete myobtaining evidence if I were to carry on using it.Fair testTo make sure it was a fair test. i had to constantly keep cleaning andwashing the equipmentas any remaining substances can cause majordifferences in the results. And we had to try ansd hope that the roomtemperature will remain constant during the course of my experiment.Also we always have to keep the volume of concentrstion the same -55ml.number and range of experiments- If I have enough time, I would like to try around nine different concentrations of sodium thiosulphate with water. I am going to try hte following volumes of sodium thiosulphate 10ml, 15ml, 20ml, 25ml, 30ml,35ml, 40ml,45ml and 50ml.- I have chosen a range of 40ml as I think this is enough to truly experience the various actions of sodium thiosulphate reacting with hydrochloric acid.- If any of my results seem somewhat innaccurate or faulty, I will try my best to redo them.Safety- Make sure to tie hair back.- Wear a lab coat.- Wear safety glasses or goggles.- Wash hand in between each experimewnt and after anmd before eating.- Open windows so the smell isnt too overwhelmingDillutionsTo make my experiment a fair test, we must always have the same volumeof solutions, 55ml.