Critical temperature of H2O, NH3 , CO2 and O2 are 647 K, 405.6 K , 304.10 K and 154.2 K respectively . If the cooling starts from 500 K to their critical temperature, the gas that liquifies first is 304.10 K and 154.2 K respectively . If the cooling starts from 500 K to their critical temperature 405.6 K CO2 and O2 are 647 K Critical temperature of H2O NH3 the gas that liquifies first is February 12, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related