how to calculate partial pressures of isooctane and oxygen

cecil_victor · Post by **cecil_victor** » Fri Mar 08, 2013 8:10 am

How do i calculate partial pressures of iso-octane and oxygen in fresh gas ?

Thank you in advance.

KriggY · Post by **KriggY** » Mon Mar 18, 2013 6:15 am

well total pressure = partial pressure of O₂ + partial pressure of isooctane and it depends on mole fraction of given gas.
lets say total pressure is
100 Pa and you have 1 mole of O₂ and 4 moles of isooctane so
p(o2)=100/5 = 20 Pa p(isooctane)=100/5*5=80 Pa