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

    5
    ReputationRep:
    Name:  image.jpg
Views: 13
Size:  500.1 KB
    What happens to the 5 electrons ?
    • Community Assistant
    • Study Helper
    Offline

    14
    ReputationRep:
    (Original post by Hazel99)
    Name:  image.jpg
Views: 13
Size:  500.1 KB
    What happens to the 5 electrons ?
    They are used to change the oxidation state of the manganese atoms from +7 to +2. They come from the species being oxidised.
    Offline

    17
    ReputationRep:
    Also, it should be MnO4-, not 2-.

    You're slacking charco!
    • Community Assistant
    • Study Helper
    Offline

    14
    ReputationRep:
    (Original post by Pigster)
    Also, it should be MnO4-, not 2-.

    You're slacking charco!
    I restrict myself to answering the question!
    Offline

    17
    ReputationRep:
    (Original post by charco)
    I restrict myself to answering the question!
    I that case, you didn't answer the Q, as the o.n. of the Mn is +6, not +7 : )
    Offline

    11
    ReputationRep:
    Just change the number of electrons in that case though to balance out the charge?
    • Community Assistant
    Offline

    21
    ReputationRep:
    (Original post by Hazel99)
    What happens to the 5 electrons ?
    They are changing the oxidation state of manganese as charco said. The oxidation number of manganese is +7 in this case, five added electrons reduced this number to +2 (what means there is still a proton excess of two protons after adding five electrons).


    (Original post by Pigster)
    Also, it should be MnO4-, not 2-.

    You're slacking charco!
    You are right. Would not have realized that, if you have nothing said. Eight reputation points for your attention.
 
 
 
  • 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.