Rate Laws Come From Experiment, Not Stoichiometric Coefficients
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A rate law's reaction orders are determined by experiment, never predicted from an equation's stoichiometric coefficients.
Show
For NO2 + CO → NO + CO2, the measured rate law below 225 °C is second order in NO2 and zero order in CO, though coefficients equal one.
Watch for
Matching an order to its coefficient is coincidence for an overall equation — only experiment establishes it.