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    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!
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