If a is the initial concentration of reaction, then the half life period of a reaction of nth order is inversely proportional to. If a is the initial concentration of reaction then the half life period of a reaction of nth order is inversely proportional to. June 3, 2021 Category: Chapter 7 - Chemical Kinetics and Nuclear Chemistry (Level 1 and Level 2) , N Awasthi Physical Chemistry , Facebook Messenger WhatsApp Share this:TwitterFacebook Related