Which method is the easiest way to measure the rate of change in a chemical reaction?

Measuring gas production with a syringe is an effective method to determine the rate of change in a chemical reaction because it offers a direct and quantitative measure of the reaction's progress. Gas evolution is a common indicator of many reactions, particularly those that involve the formation of gases as products. Using a syringe allows for precise collection of gas volumes at specific time intervals, which can then be used to calculate the rate of reaction easily.

This method is advantageous because it often yields clear, measurable results in real-time, providing a straightforward approach to quantify the reaction rate. The volume of gas produced can be graphed against time to visualize and analyze the change in reaction rate over a given period, providing valuable information about the kinetics of the reaction. Thus, this method stands out for its reliability and ease of use in practical applications.