Kinetics Linking Macro-molec Flashcards
Reaction mechanism -
Describe the series of steps and the species involved in each of them
Elementary step is …A ________ chemical equation that describes ____ single collision event (it cannot be __________ ______/ __________ further). There’s ____ transition state for each elementary step. An elementary step has its own __________ ________ which depends on which bonds are _____/________ during this specific step. An elementary step can be either __________/___________. Each elementary step happens at ____ ____ rate. The _________ elementary step in a mechanism is often referred to as the _____ _________ ____or “rate limiting step” for the overall reaction.
A balanced chemical equation that describes ONE single collision event (it cannot be broken down/subdivided further) . There’s one transition state for each elementary step. An elementary step has its own activation energy which depends on which bonds are broken/formed during this specific step. An elementary step can be either endothermic or exothermic. Each elementary step happens at its own rate. The slowest elementary step in a mechanism is often referred to as the “rate determining step” or “rate limiting step” for the overall reaction.
The overall reaction
The overall reaction (or net reaction) corresponds to to the sum of all elementary steps involved in a mechanism
An intermediate species is a species that is formed by one of the _______ _____ in the mechanism and _______ by another elementary step. The intermediate species do not appear in the _________ reaction. Unlike a transition state , an intermediate species is ________ ____ and can be ________.
An intermediate species is a species that is formed by one of the elementary step in the mechanism and consumed by another elementary step. The intermediate species do not appear in the overall reaction. Unlike a transition state, an intermediate species is “relatively” stable and can be isolated.
