1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Entropy related thermodynamics question

  1. Sep 25, 2006 #1
    need a bit of help. anything would do, just need to get things started.

    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.
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?

Similar Discussions: Entropy related thermodynamics question
  1. Easy question (Replies: 0)