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A reaction is said to be diffusion controlled when it occurs as fast as the reactants diffuse through the solution. The following is an example of a diffusion controlled reaction.

The rate constant for this reaction is 1.4x1011 M-1s-1 at 25oC and the reaction obeys the following rate law.

rate = k(H3O+)(OH-)

Calculate the rate of reaction in a neutral solution (pH=7.00).

  • Chemistry -

    What's the problem with substituting 10^-7 for hydronium and hydroxide ions along with k and solving?

  • Chemistry -

    So would it be

    rate = (10^-7)*(10^-7)*(1.4X10^11)

  • Chemistry -

    That's what I would do.

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