If the rate constant for a first order reaction is k , time (t) required for the completion of 99% of the reaction is given by: If the rate constant for a first order reaction is k time (t) required for the completion of 99% of the reaction is given by: June 4, 2021 Category: Chapter 17 - Chemical Kinetics , Chemistry , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Facebook Messenger WhatsApp Share this:TwitterFacebook Related