Increasing the temperature generally increases the rate of reaction between sodium thiosulfate Na2S2O3 and hydrochloric acid HCl . This is because the reaction rate is directly related to the kinetic energy of the reacting particles.At higher temperatures, the particles have more kinetic energy, which means they move faster and collide more frequently with each other. When the particles collide with enough energy, they can overcome the activation energy barrier, and the reaction occurs. As a result, the rate of reaction increases with increasing temperature.The reaction between sodium thiosulfate and hydrochloric acid is as follows:Na2S2O3 aq + 2HCl aq 2NaCl aq + SO2 g + S s + H2O l In this reaction, the formation of a yellow precipitate of sulfur S is observed, which can be used to measure the reaction rate. By measuring the time it takes for the solution to become opaque due to the formation of sulfur, we can determine the effect of temperature on the reaction rate.In summary, increasing the temperature increases the rate of reaction between sodium thiosulfate and hydrochloric acid due to the increased kinetic energy of the particles, leading to more frequent and energetic collisions.