Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    8
    ReputationRep:
    4Fe+3O2---> 2Fe2O3

    Fe=+27.3
    FeO=+87.4
    O2=+205

    (2*87.4)-(4*27.3)+(3*205) =?

    I'm not sure if I'm doing the equation right ?
    • Community Assistant
    • Study Helper
    Offline

    14
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by Hazel99)
    4Fe+3O2---> 2Fe2O3

    Fe=+27.3
    FeO=+87.4
    O2=+205

    (2*87.4) - (4*27.3)+(3*205) =?

    I'm not sure if I'm doing the equation right ?
    You lose the entropy of the reactants and gain the entropy of the products.

    So you should also subtract the entropy of oxygen.

    (2*87.4) - [(4*27.3) + (3*205)] =
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    What's your favourite Christmas sweets?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.