Rate-Determining Step (OCR A-Level Chemistry A): Flashcards
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Reaction mechanism
Reaction mechanism
Sequence of individual steps from reactants to products
Rate-determining step (RDS)
Rate-determining step (RDS)
Slowest step that controls overall reaction rate
Role of slowest step in multi-step reaction
Role of slowest step in multi-step reaction
Acts as bottleneck limiting overall reaction rate
What does RDS determine?
What does RDS determine?
Which reactants appear in the rate equation
Meaning of orders in rate equation
Meaning of orders in rate equation
Number of molecules/ions in the rate-determining step
Intermediate in reaction mechanism
Intermediate in reaction mechanism
Species formed in one step, consumed in another
Why multi-step reactions more likely?
Why multi-step reactions more likely?
Simple 2-particle collisions more probable than multi-particle
Zero order for species means what?
Zero order for species means what?
Involved in fast step after rate-determining step
SN1 mechanism
SN1 mechanism
Substitution nucleophilic unimolecular mechanism
Can rate equation prove a mechanism?
Can rate equation prove a mechanism?
No, only support or rule out proposed mechanisms