Question

A researcher collected data to see how the concentration of thiosulfate in water affects the reaction time with hydrochloric acid. Which conclusion can the researcher draw?

A) As concentration increases, reaction time decreases.
B) There is no obvious mathematical relationship.
C) As concentration decreases, reaction time decreases.
D) As concentration increases, reaction time increases.

Answer 1

As the concentration of thiosulfate increases, the reaction time with hydrochloric acid decreases due to a higher rate of particle collisions and an increase in reaction rate.

Step-by-step explanation:

The researcher who collected data to see how the concentration of thiosulfate in water affects the reaction time with hydrochloric acid can conclude that the reaction time and concentration are inversely related. As the concentration increases, the number of collisions between particles also increases, leading to a higher reaction rate. Therefore, as the concentration of thiosulfate increases, the reaction time required for the reaction to occur decreases.


This is confirmed by understanding that reaction rates generally increase when reactant concentrations are increased. This observation is consistent with the principles of chemical kinetics and the rate laws that describe the impact of reactant concentration on the rate of reaction.