The reaction between sodium thiosulfate Na2S2O3 and hydrochloric acid HCl is a well-known reaction in chemistry, often used to study reaction rates. The reaction can be represented by the following balanced equation:Na2S2O3 aq + 2 HCl aq 2 NaCl aq + H2O l + SO2 g + S s In this reaction, sodium thiosulfate reacts with hydrochloric acid to produce sodium chloride, water, sulfur dioxide, and solid sulfur. The reaction is often monitored by the formation of a cloudy precipitate of sulfur, which makes the solution opaque.The effect of temperature on the reaction rate and yield can be explained using the collision theory and the concept of activation energy.1. Effect on reaction rate:As the temperature increases, the kinetic energy of the particles molecules and ions in the reaction mixture also increases. This leads to more frequent and energetic collisions between the reactant particles. When the collisions have enough energy to overcome the activation energy barrier, the reaction occurs.In the case of the reaction between sodium thiosulfate and hydrochloric acid, increasing the temperature will increase the reaction rate. This is because the increased kinetic energy of the particles leads to more successful collisions between the sodium thiosulfate and hydrochloric acid molecules, resulting in a faster formation of products.2. Effect on yield:The reaction between sodium thiosulfate and hydrochloric acid is a straightforward reaction that goes to completion, meaning that all the reactants are converted into products. In this case, the yield of the reaction is not affected by temperature, as there are no reversible reactions or equilibrium involved. The reaction will continue until one of the reactants is completely consumed, and the yield will be determined by the stoichiometry of the reaction.In summary, increasing the temperature will increase the reaction rate between sodium thiosulfate and hydrochloric acid, but it will not affect the yield of the reaction, as it goes to completion.