Iron is found as Iron (III) oxide, why is it necessary to have the III after the iron

Announcements Posted on
TSR looking different to you this week? Find out why here. 02-12-2016
    • Thread Starter
    Offline

    2
    ReputationRep:
    Also please answer these question: Iron (III) oxide reacts with carbon to form iron what is the advantage of making Iron this way? Iron (III) reacts with aluminium, write a balanced equation for this reaction and how would you classify this reaction? Why is this reaction important? Iron is a metal what kind of bonding is present in iron? This is to for homework thsi is for revision as i can't answer these questions from this paper.
    Offline

    1
    ReputationRep:
    The III shows what the oxidation state for iron is (transition metal tend to have multiple oxidation numbers)
    Offline

    3
    ReputationRep:
    (Original post by Anonymous1502)
    Also please answer these question: Iron (III) oxide reacts with carbon to form iron what is the advantage of making Iron this way? Iron (III) reacts with aluminium, write a balanced equation for this reaction and how would you classify this reaction? Why is this reaction important? Iron is a metal what kind of bonding is present in iron? This is to for homework thsi is for revision as i can't answer these questions from this paper.
    For the follow-up questions:

    1. What are the products of the reaction between iron(III) oxide and carbon? (Try writing a balanced equation for it too!) Think about what this means about collecting the iron you produce.
    2. The reaction between iron(III) oxide and aluminium is a well-known thermite reaction. (But the classification is something else – look at the oxidation states of the various species involved.) It's useful because it produces iron and releases a lot of heat, so one use is for iron-based welding, as the wikipedia link says.
    3. What types of bonding do you know about? Which one will apply to iron?
    Offline

    1
    ReputationRep:
    Iron (III) Oxide and Aluminium is the thermite reaction but have a look at the oxidation number of each element.

    Fe2O3 + Al >>> 2Fe + 3AlO

    Fe has +3 before and 0 after
    Al has 0 before and +3 after
    O remains constant at -2

    Reduction AND Oxidation take place here meaning it is a REDOX reaction.

    "An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron."
 
 
 
Write a reply… Reply
Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: October 16, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Today on TSR
Poll
How are you feeling about doing A-levels?
Study resources

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.