HCl is made up of H+ and Cl- let's label these A and B. Sodium Thiosulphate + Hydrochloric acid »» Sulphur + Sodium Chloride + Sulphur Dioxide + Water The results were fairly reliable under our conditions. VAT Registration No: 842417633. In our experiment we keep the HCL a constant, and also keeping the volume of the solution was important to get more accurate results. The other products (SO2 and NaCl) are both soluble in H2O. Required fields are marked *, Effect Of Temperature On The Rate Of Reaction Between Sodium Thiosulphate And Hydrochloric Acid. Using a measuring cylinder measure out 5 cm³ of the hydrochloric solution, and add this to the flask. Take a white tile and draw a cross mark on it. If so, let's start with the reactants. The reaction between sodium thiosulphate and hydrochloric acid proceeds to the following chemical equation: Na2S2O3(aq) + 2HCl(aq) ® 2NaCl(aq) + SO2(aq) + H2O(l) + S(s) This equation can also be represented in the ionic-equation form in the following manner: S2O32- + 2H+ ® H2O + SO2 + S. The sulphur dioxide thus formed is dissolved in water as sulphurous acid. Observe the flask and start the stop-watch as soon as the cross mark becomes invisible. Our academic experts are ready and waiting to assist with any writing project you may have. Start by breaking both compounds into their ions. Therefore, the first product is H2S2O3. The phenomenon behind all of this is the collision theory and how it plays a big role in this investigation. Get a free answer to a quick problem. Ans: Hydrochloric acid and sodium thiosulphate. As soon as you can’t see the cross any more stop the stopwatch, and record the results in a table. The rate of chemical reaction is directly proportional to the temperature. Record all results in a table and work out the rate by dividing 1. We're here to answer any questions you have about our services. Our predictions were accurate. What is the concentration of hydrochloric acid used for this experiment? A link to the app was sent to your phone. Take 1M HCl of volume 10 mL with the help of a burette and add it to the conical flask containing sodium thiosulphate. The overall reaction will be Na2S2O3 + HCl --> H2S2O3 + NaCl. The method we used was fairly accurate, our results weren’t perfect but they were good enough for us to see what happens during the experiment. The aim of this experiment – Understanding the effect of temperature variation on the rate of reaction between hydrochloric acid and sodium thiosulphate. I would really appreciate a detailed explanation of the reaction between sodium thiosulfate and hydrochloric acid. The aim of the experiment will be to investigate how varying water temperatures influence the time of a chemical reaction, in this case being, a combination of Sodium Thiosulfate and Hydrochloric Acid. A double replacement reaction essentially swaps anions (the negative ions, which are written as the second half of the compound,) so the generic reaction will look like this: H+ and S2O3 2- are going to bond and we want to make sure the charges cancel out. Disclaimer: This work has been submitted by a university student. Any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of UKEssays.com. Aim: To investigate how the rate of reaction between Sodium Thiosulphate and Hydrochloric acid is affected by changing the concentration. Na2S2O3(aq) + 2HCl (aq) ==> SO2(aq) + S(s) + H2O(l) + 2NaCl (aq) ... balanced equation. All work is written to order. Therefore, the first product is H, The second product will be the compound that forms between the sodium ion (Na. ) As the concentration of sodium Thiosulphate decrease the time taken. Hypothesis: The higher the concentration the faster the rate of reaction will be and the time taken to reach equilibrium will decrease. As the temperature increases, the reaction rate also increases. Registered office: Venture House, Cross Street, Arnold, Nottingham, Nottinghamshire, NG5 7PJ. Sodium Thiosulphate + Hydrochloric acid »» Sulphur + Sodium Chloride +, PREDICTION: As the concentration of Sodium Thiosulphate increases the, length of time for cross to disappear decreases (inverse). No plagiarism, guaranteed! Study for free with our range of university lectures! A more diluted concentration will have a longer rate of reaction and a longer time to reach equilibrium. Looking for a flexible role? Chemistry research experience, Both Na2S2O3 and HCl are strong electrolytes, which means they are dissociated in aqueous solutions. This. This is, because the increase of concentration of Sodium Thiosulphate will, increase the rate of reaction between Hydrochloric acid and sodium, SCIENTIFIC REASONS FOR PREDICTION: the results from preliminary, From the results you can see that there is a directly proportional, relationship between the concentration and the rate of reaction.

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