A reaction is 50% complete in 2 hours and 75% complete in 4 hours. What is the order of reaction? A reaction is 50% complete in 2 hours and 75% complete in 4 hours. What is the order of reaction? 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