Hey there! Sign in to join this conversationNew here? Join for free

Help! Chemistry investigation Iodine clock/ hydrogen peroxide 10 vol concentration?! Watch

    • Thread Starter
    Offline

    21
    ReputationRep:
    My teacher is refusing to help me so hello TSR

    I'm doing my AH Investigation and I need to work out
    the concentration of 10vol H2O2 be when 2ml is dissolved with 23ml water?

    Also, what reactants are the most dominant if I was to do an experiment to determine rate law?

    Would just varying hydrogen peroxide be enough?
    By what I understand the equations are

    Hydrogen peroxide+2I- -----> I2+ 2H20
    Then when sodium this sulphate is added I2 get consumed so
    2Sodium Thiosulphate+I2----> S4O6+ 2I-
    Then there are no more sodium Thiosulphate ions left they react with starch to form a blue black colour??



    If someone could please help I would really appreciate it I'm panicking!
 
 
 
  • 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?
    Applying to university
  • 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.