Factor Affecting Reaction Time

(Hultsch, MacDonald, & Dixon, 2002) (Gorus, 2008) Luchies et al. Conducted other studies. (2002) Also, as healthy age increases, we believe that adults rapidly reduce the response capacity and bring longer response time. Welford (1980) found that slowing down reactions is not a simple mechanical factor, elderly people used in the experiment tend to be more cautious and their reaction during the investigation may be used more than young people Has been developed. This survey

Experimental studies investigating factors influencing the reaction rate of magnesium belt and hydrochloric acid examined factors influencing the reaction rate of magnesium belt and hydrochloric acid. Chemical reactions between substances are caused by particle collisions. The more collisions, the shorter the response time. - Examination to investigate how acid concentration influences the reaction rate of hydrochloric acid and calcium carbonate (magnesium band) -------- My study seems to influence the reaction of CaCO3 and HCl We aim to find a way to change the concentration of acid to evaluate. To test my experiment fairly, I change only one of the variables. It is the concentration of acid.

In the actual course experiment, we decided to change the factor that affects the response speed. I would like to know how changing the concentration of one of the reactants affects the kinetics and make sure the prediction of my effect concentration is correct. I predict that the higher the concentration of reactants, the faster the reaction time will be. In my course experiment, I decided to investigate how changing the concentration of hydrochloric acid affects the reaction rate. At room temperature, I reacted hydrochloric acid with sodium thiosulfate and the reaction rate was measured using the "crossover" method described above. For each experiment, the acid concentration was lowered from 30 cm 3 to 5 cm 3, and water was diluted to 5 cm 3 with acid. I always keep sodium thiosulfate at 30 cubic centimeters and repeat each reaction twice.

In this work, I examined various factors that affect the reaction rate. I chose hydrochloric acid (HCl) and sodium thiosulfate (N 2 S 2 O 3) as reactants. Mixing sodium thiosulfate and hydrochloric acid produces yellow sulfur. As more and more sulfur is formed, the solution becomes more and more difficult to understand. The speed at which the reaction occurs can be measured by pulling the cross and placing the reaction mixture in a clear Erlenmeyer flask. Next, in order to get an approximate reaction time we observe the time required for the cloth to disappear (the mixture is cloudy due to sulfur formation).