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

    1
    ReputationRep:
    An unusual compound of iron has been detected on the surface of the planet Mars. This compound contains the ferrate(VI) ion.
    (a) A student uses 1.00 g of iron(III) oxide and makes, on crystallisation, 0.450 g of sodium ferrate(VI), Na2FeO4.
    Calculate the percentage yield, by mass, of sodium ferrate(VI).
    Show your working.
    Express your answer to an appropriate number of significant figures.

    I dont even know where to start, I tried making an equation and got stuck, please help me get started on this question, thank you
    • Community Assistant
    • Study Helper
    Offline

    14
    ReputationRep:
    (Original post by BuuTuu)
    An unusual compound of iron has been detected on the surface of the planet Mars. This compound contains the ferrate(VI) ion.
    (a) A student uses 1.00 g of iron(III) oxide and makes, on crystallisation, 0.450 g of sodium ferrate(VI), Na2FeO4.
    Calculate the percentage yield, by mass, of sodium ferrate(VI).
    Show your working.
    Express your answer to an appropriate number of significant figures.

    I dont even know where to start, I tried making an equation and got stuck, please help me get started on this question, thank you
    Find the total mass of iron in the iron(III) oxide and hence the number of moles.

    This must be equal to the moles of sodium ferrate(VI).

    Convert moles to mass for sodium ferrate(VI).

    Now calculate the percentage yield...
 
 
 
  • 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
    Did TEF Bronze Award affect your UCAS choices?
  • 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.