Objective: To
analyze how varying the concentration of KIO3 affects the rate of
reaction, which is visually tracked by the time it takes for the reaction
mixture to turn blue.
The kinetics of the iodine "clock reaction" involves potassium iodate (KIO3) and sodium sulphite (Na2SO3) in an acidic solution, with starch acting as an indicator.
When sodium sulphite is fully consumed, iodine (I2) is produced, which reacts with starch to form a dark blue complex. The time from the addition of Na2SO3 to the appearance of the blue color allows us to estimate the reaction rate. The rate is expected to increase as the concentration of KIO3 increases, indicating a faster reaction.
The reaction is
initiated by adding a fixed amount of Na2SO3 to the
mixture. The time taken for the color change is recorded for different volumes
of KIO3, and the reaction rate is calculated based on the
concentration of Na2SO3 and the time elapsed.
Comments
Post a Comment