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    Good afternoon.
    I have a question which is quite simple.
    I am supposed to do my Chemistry IA on iodine clock reaction and then find the rate of reaction and other interesting things.

    However, I did the following reaction:
    KI + H2O2 + H2SO4 -> K2SO4 + I2 + H2O
    and I varied the concentrations of KI, H2O2 and H2SO4

    Is this an iodine clock reaction?
    And if not, what can I do with what I have?

    Thank you in advance.
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    (Original post by Sofya)
    Good afternoon.
    I have a question which is quite simple.
    I am supposed to do my Chemistry IA on iodine clock reaction and then find the rate of reaction and other interesting things.

    However, I did the following reaction:
    KI + H2O2 + H2SO4 -> K2SO4 + I2 + H2O
    and I varied the concentrations of KI, H2O2 and H2SO4

    Is this an iodine clock reaction?
    And if not, what can I do with what I have?

    Thank you in advance.
    It is one of the reactions in an iodine clock, but not a clock. You will get steady formation of iodine as the reaction proceeds.
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    (Original post by charco)
    It is one of the reactions in an iodine clock, but not a clock. You will get steady formation of iodine as the reaction proceeds.
    I was so afraid of this...
    Do you think there's anything I can do with the information I have?
    I varied the concentrations a little bit, but now, when I finally understood that I was following the wrong path... Well, I am confused.
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    (Original post by Sofya)
    I was so afraid of this...
    Do you think there's anything I can do with the information I have?
    I varied the concentrations a little bit, but now, when I finally understood that I was following the wrong path... Well, I am confused.
    What did you actually measure?
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    (Original post by charco)
    What did you actually measure?
    I measures how much time it takes for the colour to become so deep that I can no longer see the picture which is put under a beaker in which I pour the solutions.

    I apologize for being so vague before, I was just so nervous
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    (Original post by Sofya)
    I measures how much time it takes for the colour to become so deep that I can no longer see the picture which is put under a beaker in which I pour the solutions.

    I apologize for being so vague before, I was just so nervous
    Did you use starch as an indicator of the iodine?
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    (Original post by charco)
    Did you use starch as an indicator of the iodine?
    No...
    But it still changed colour
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    (Original post by Sofya)
    No...
    But it still changed colour
    of course, but iodine colour (yellow --> orange --> red) is not as obvious as the starch-iodine complex dark blue/black
 
 
 
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