Am I doing shit? 6Fe2O3 = 4Fe3O4 + O2 Q = fO2 (fugacity)

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Anonymous
2017-01-18 05:31:07 Post No. 8611713
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Anonymous 2017-01-18 05:31:07 Post No. 8611713 [Report]

Am I doing shit?

6Fe2O3 = 4Fe3O4 + O2

Q = fO2 (fugacity)

ΔrG = ΔrG° + RTlnfO2

ΔrG = 0

- ΔrG° = RTlnfO2
- ΔrG°/RT = lnfO2
exp(-ΔrG°/RT) = fO2

fO2 = exp(-391.6/8.31T)

Inducing this plot.

Anonymous 2017-01-18 06:32:55 Post No.8611829
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Anonymous 2017-01-18 06:32:55 Post No.8611829 [Report]

>>8611713
Fuck off thermofag

Anonymous 2017-01-19 05:16:39 Post No.8613383
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Anonymous 2017-01-19 05:16:39 Post No.8613383 [Report]

>>8611713
Your notation is messy as fuck but yeah it looks like you did everything right.

ΔG = ΔG° + RT ln(Q)
Assuming equilibrium I guess lol
0 = ΔG° + RT ln(Q)
ln(Q) = -ΔG°/RT
Q = fO2 = exp(-ΔG°/RT) = exp((-391.6) / [(8.314)(T)])

Anonymous 2017-01-19 05:32:30 Post No.8613408
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Anonymous 2017-01-19 05:32:30 Post No.8613408 [Report]

>>8611713
I can't read this shit, is that equation even correct? It doesn't seem so although that may just be it being unreadable.

Anonymous 2017-01-19 05:34:08 Post No.8613412
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Anonymous 2017-01-19 05:34:08 Post No.8613412 [Report]

>>8613408
It's probably correct. Look at the equilibrium established and really the only thing there is to pay attention to is the "activity" of O2, so it's safe to assume Q = fO2