A gas-phase reaction. 2AB. is to be carried out isothermally and at constant pressure in a batch reactor. Initially, the reactor contains 50 moles A, 15 moles B and 10 mol inert materials. The reaction is second order with a rate constant of k=0.051 mol.s. Inital reactor volume is 1000L. What is the time (s) required for 50% conversion? [ Seciniz ] What is the time (s) required for 80 fo gohvensionif the experimentwere conducted in a constant volume batem fedctoi