The purpose of this survey is to record the time it takes for a reaction to occur when sodium thiosulfate is mixed with hydrochloric acid. The equation for this reaction is: Na2S2O3 + 2HCl → 2NaCl + S + SO2 + H2OSSodium thiosulfate (Na2S2O3), after reaction with hydrochloric acid (HCl), produces yellow sulfur, which is the cause of the disorder of the solution. The time it takes for the reaction to occur is known as the reaction rate. . The speed of a reaction can be commonly explained by collision theory. This theory states that for a reaction to occur, the particles of each reactant must collide, with successful collisions resulting in chemical changes. Activation energy is released when particles collide, and whether the collision is successful depends on the amount of activation energy present. The purpose of the energy is to allow the element to break its current bonds and form new ones. In the case of liquid solutions, the concentration of the elements is also important in determining whether the reaction will be...