Reaction rate of a first order reaction, which is half completed in 23 minutes will be _________________? August 23, 2021February 20, 2019 by admin Reaction rate of a first order reaction, which is half completed in 23 minutes will be _________________? A. 0.03 sec-1B. 0.03 min-1 C. 0.03 hr-1 D. 0.05 min-1