What is a clock reaction and how can it be used to study kinetics?

• A. A clock reaction is a reaction that proceeds at a constant rate and shows no visual change, making it unsuitable for kinetics studies.
• B. A clock reaction is a reaction that shows a rapid change after a measurable induction time; used to measure rates and deduce orders by varying initial conditions.
• C. A clock reaction is a slow, continuous process whose rate cannot be determined experimentally.
• D. A clock reaction is any reaction that forms a precipitate immediately upon mixing.

Answer: (B)