rate determining step

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Last updated 1:32 PM on 6/6/26
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4 Terms

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rate determining step

the slowest step in a reaction mechanism of a multi step reaction.

2
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evidence

  • if there are more than 2 molecules on reactant sid of overall equation.

  • reactions take place when particles collide

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Rate equation for RDS

The molecules in the rate equation make up the RDS.

E.g rate equation= k[NO2]2

RDS NO2 + NO2 —> ….

(also power like 2 would mean 2 molecules of NO2)

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Mechanism

Rate equation: k[NO2]2

  • RDS: NO2 + NO2 —> NO + NO3

  • s2: NO3 + CO —> NO2 + CO2

  • OE: NO2 + CO —> NO + CO2

MUST ADD UP TO OVERALL EQUATION.

  • intermediates cancel out