need a bit of help. anything would do, just need to get things started.(adsbygoogle = window.adsbygoogle || []).push({});

------------------------------

FeS2 in an aqueous slurry is oxidized with 15% pure Oxygen in autoclave:

4FeS2 + 15O2 + 8H2O -> 2Fe2O3 + 8H2SO4

to sustain reatcion, a final temp of at least 220C must be achieved @ oxygen partial pressure of 800kPa

feed slurry is pure pyrite in pure water at 25C, estimate minimum pyrite pulp density (mass % solids)

------------------------------

the question comes with a chart that shows molecular weight (g/mol) of each compound, the enthalpy (kJ/mol) at 298K of each compound, and the A B C to calculate heat capacity (cp) using the formula:

cp = A + (B*10^-3)T + (C*10^5)T^-2 (J/mol/K)

it also has the formula to calculate water vapour pressure.

i know how to do enthalpy calculations. but i am not sure how i can use the pressure and the temperature to calculate the mass.

any hints / suggestions will be greatly appreciated thanks.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Entropy related thermodynamics question

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**