Hydrochloric Acid: HCl Sodium Thiosulfate:Na2S2O3 AIM The aim of this experiment is to see how the reaction rate is effected by temperature, specifically heated and chilled sodium thiosulfate, and also concentration of hydrochloric acid, 1 mole and 2 moles to see how the speed of the chemical reaction is affected. The equation is: Na 2 S 2 O 3 (aq) + 2HCl (aq) 2NaCl (aq) + H 2 O (l)+ S(s) + SO 2 (g). The . Introduction . The aim of this experiment – Understanding the effect of concentration on the rate of reaction between hydrochloric acid and sodium thiosulphate. Chemical Concepts: Kinetics The rate equation and the rate constant: To remove the we have to add a constant of proportionality. Whether you are introducing collision theory or something more demanding like reaction order, the reaction between sodium thiosulfate—Na 2 S 2 O 3 and hydrochloric acid can provide a consistent, accurate, and engaging opportunity for investigating these topics.. A few weeks ago, I was looking for a new reaction that could be used to investigate how concentration affects reaction … I am investigating the rate of reaction between Hydrochloric acid (HCl) and Sodium Thiosulphate (Na2S2O3), when Na2S2O3 is mixed with water (H20). About o.17g of Na2S2O3 … This factor is Sodium thiosulfate react with hydrogen chloride to produce sodium chloride, sulfur dioxide, sulfur and water. The reaction used in this experiment is between dilute hydrochloric acid and sodium thiosulphate (formula Na2S2O3). Learning Outcomes. Add / Edited: 26.06.2015 / Evaluation of information: 5.0 out of 5 / number of votes: 1. Varying Concentrations Of 1.0 M HCl. One can then take the change in the rate between two experiments and the corresponding change in the concentration and determine the order of reaction for that reactant. Hydrogen chloride - diluted, cold solution. From the general form for a rate law given: Rate = k[A]n[B]m, the general rate law for the reaction between HCl and Na2S2O3 is written as: Rate = k[HCl]n[Na2S2O3]m By determining how the reaction rate varies as the concentration of each reactant is varied, the orders n and m, and hence the rate law, will be determined. FONTS Reaction Rate of Sodium thiosulphate Na2S2O3(aq) & Hydrochloric Acid HCl(aq) with different Temperature Values Summary of the Lab: Graph: To begin the lab, 3M Hydrochloric Acid (HCl) and Sodium thiosulphate (Na2S2O3) solid were given. Lab 29. The first is the number of collisions that take place between molecules during a reaction. For instance, if I double the concentration of HCl and the rate doubles, then the reaction is 1st order in HCl (i.e. suggests that the rate of a reaction depends on three important factors. Lab report Introduction. Question: Exercise 1: Determining The Rate Laws Of The Reaction Between HCl And Na2S2O3 Data Table 1. Therefore the rate of the reaction between Na 2 S 2 O 3 and HCl is directly proportional to the concentration of Na 2 S 2 O 3 solution. Rate Laws: What Is the Rate Law for the Reaction Between Hydrochloric Acid and Sodium Thiosulfate? Sodium thiosulphate reacts with Hydrochloric acid reacts to form yellow precipitate of sulphur. ... Picture of reaction: Сoding to search: Na2S2O3 + 2 HCl = 2 NaCl + SO2 + S + H2O. Theory: The reaction between Sodium thiosulphate (Na 2 S 2 O 3) and hydrochloric acid (HCl) To produce a colloidal solution of sulphur, where the solution obtained is translucent. The rate of reaction is recorded for each experiment. Students understand the effect of concentration of the reactant on the rate of a chemical reaction. t=1). collision theory of reactions. The time taken for the same amount of yellow precipitate to be produced provides a method of measuring the rate of reaction at different concentrations. To study the effect of reactant concentration on the rate of the reaction between sodium thiosulphate and hydrochloric acid AND to determine the order of sodium thiosulphate. The rate then is: Rate is proportional to the concentration Rate = k [A] x Remember - a reaction usually has more than one reactant: A + B + C Products This means that the rate could depend on all 3 reactants: But 1/t is a direct measure of the rate of the reaction. This is called the rate constant. Background Knowledge The rate of a reaction can be speeded up by increasing the temperature; at a higher temperature the particles move faster and