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1. assume air is an iseal gas at 25C and 100kPa. the mole fractions of components are nitrogen_0.7567
oxygen=0.2035 water vapor=0.0303 carbon dioxide=0.0003 Calc. min work to seperate
a-1kmol O2 at 25C 100kPa
b-1kmol N2 at 25C 100kPa from atmosphere
Wmin=ge-gi=(ho-To.se)-(hi-To.si) [/B]
for ideal gas Wmin=To(si-se)=-R.To. total(Xi.lnxi)
I assume air is composed of only O2 and N2, min ork is equal to - of the entropy change for mixing process
but Iam confused it is asked only to separate 1 kmol O2[/B]
oxygen=0.2035 water vapor=0.0303 carbon dioxide=0.0003 Calc. min work to seperate
a-1kmol O2 at 25C 100kPa
b-1kmol N2 at 25C 100kPa from atmosphere
Homework Equations
Wmin=ge-gi=(ho-To.se)-(hi-To.si) [/B]
The Attempt at a Solution
for ideal gas Wmin=To(si-se)=-R.To. total(Xi.lnxi)
I assume air is composed of only O2 and N2, min ork is equal to - of the entropy change for mixing process
but Iam confused it is asked only to separate 1 kmol O2[/B]