rate-determining step

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rate-determining step

[′rāt di¦tər·mən·iŋ ‚step]
(chemistry)
In a multistep chemical reaction, the step with the lowest velocity, which determines the rate of the overall reaction.
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The flip of C-H bond is actually not involved in the rate determining step due to loss of translation and rotational freedom in the process.
The positively charged complex then reacts further with the protonated vanadium in the slow and rate determining step.
Vanadium, like other transition metals, has catalytic properties due to its participation in the rate determining step (slow step); the vanadium V catalyst works by providing an alternative reaction pathway to the reaction product.