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    Hello!
    I try to find the mechanism for the following chemical reaction:
    2KI(aq)+ H2O2(aq) + H2SO4(aq) à K2SO4(aq) + I2(aq)+ H2O(l)

    The rate equation I got is as following:
    Rate = k * [KI] * [H2O2] * [H2SO4]
    I was thinking about the following:2KI+ H2SO4 à K2SO4 + 2HI2HI+ H2O2 à I2 + 2H2O But it does not fit my rate equation.
    Maybe you can give me a hint? I think I am doing something wrong here.
    Thank you in advance!
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    (Original post by Sofya)
    Hello!
    I try to find the mechanism for the following chemical reaction:
    2KI(aq)+ H2O2(aq) + H2SO4(aq) à K2SO4(aq) + I2(aq)+ H2O(l)

    The rate equation I got is as following:
    Rate = k * [KI] * [H2O2] * [H2SO4]
    I was thinking about the following:2KI+ H2SO4 à K2SO4 + 2HI2HI+ H2O2 à I2 + 2H2O But it does not fit my rate equation.
    Maybe you can give me a hint? I think I am doing something wrong here.
    Thank you in advance!
    There is no relationship between the rate equation and the stoichiometric equation.

    The rate equation provides evidence regarding only the rate determining step of a mechanism.
    The sum of the mechanistic steps gives the stoichiometric equation.
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    (Original post by Sofya)
    Hello!
    I try to find the mechanism for the following chemical reaction:
    2KI(aq)+ H2O2(aq) + H2SO4(aq) à K2SO4(aq) + I2(aq)+ H2O(l)

    The rate equation I got is as following:
    Rate = k * [KI] * [H2O2] * [H2SO4]
    I was thinking about the following:2KI+ H2SO4 à K2SO4 + 2HI2HI+ H2O2 à I2 + 2H2O But it does not fit my rate equation.
    Maybe you can give me a hint? I think I am doing something wrong here.
    Thank you in advance!
    Reaction is zero order wrt sulphuric acid.
 
 
 
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