T50 of first order reaction is 10 min. Starting with 10 mol L^-1 , rate after 20 min is rate after 20 min is T50 of first order reaction is 10 min. Starting with 10 mol L^-1 June 2, 2021 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , [...]