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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: oncernhan on March 30, 2020, 09:23:27 PM

Title: Dissociation fraction (mass basis) of O
Post by: oncernhan on March 30, 2020, 09:23:27 PM

Hi all,

I have a question related to the mass fraction. If I have a mixture of N2, O2 and O, is the dissocation fraction (mass basis) α = (O)/(O + O2 + N2) or does it exclude [N2]?

Thanks.  :)

Title: Re: Dissociation fraction (mass basis) of O
Post by: mjc123 on March 31, 2020, 06:40:47 AM

The dissociation fraction of O₂ is 0.5[O ]/(0.5[O ] + [O₂]). Do you see why?

Edit: include a space in [O ] or it gives odd formatting!