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Anonymous asked in Science & MathematicsChemistry · 2 months ago

What is the rate law?

I could have sworn that A was second order. But the one I have selected is wrong. 

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1 Answer

  • 2 months ago

    You are correct that the reaction is 2nd order with respect to [A]. However, if you look at trials 1 and 2, you see that changing [B] has no effect on the rate of the reaction when [A] is held constant. This tells you that the reaction is zero order with respect to [B], and so [B] does not appear in the rate law.

    The correct answer is 

    Rate = k[A]^2

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