The online simulation, "Factors Affecting the Rate of Reaction," examines how changes in volume of sodium thiosulfate and reactant concentration impact the rate of reaction. In the originial experiment, 10mL of 0.25M sodium thiosulfate (Na2S2O3) and 35mL of distilled water were initially mixed. Then, 5mL of 2M hydrochloric acid (HCl) was added while simultaneously increasing the amount of sodium thiosulfate and decreasing the amount of distilled water or 5 trials. The mixture was stirred at a constant speed, and the time it took for the cross to disappear was recorded to analyse the effect of reactant concentration.

is this clear no issue?

The description of the experiment is clear and provides the necessary details on the procedure and parameters involved. However, there are a few minor issues in the wording that could be improved for clarity:

1. Instead of saying "originial experiment," it should be "original experiment."
2. It is mentioned that the amount of sodium thiosulfate is increased while decreasing the amount of distilled water, but it is not specified by how much these changes occur.
3. "5 trials" could be rephrased as "five separate trials" to make it clearer.

Overall, the information provided is sufficient to understand the experiment.

Yes, the description you provided is clear and does not contain any issues. It provides a detailed explanation of the online simulation titled "Factors Affecting the Rate of Reaction" and outlines the experiment setup, including the volumes and concentrations of sodium thiosulfate and hydrochloric acid used, as well as the procedure followed during the experiment.