The pressure of a 1: 4 mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere. What would be the partial pressure of dioxygen?

Given that, pressure of a 1 : 4 mixture of H2 and O2 enclosed in a vessel is one atmosphere. This suggests that the moles ratio of H2 and O2 is 1:4. Thus, partial pressure of dioxygen (O2 ) is given as∴ Partial pressure of O2= mole fraction of O2× total pressure of mixrure=41+4×1=45×1atm=0.8atm=0.8×105 Nm−2=8×104Nm−2