Chemistry / Chem 1604 · Atom · ~20 seconds
Relative Reaction Rates from Stoichiometry
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State
In one reaction, every substance's rate of change relates to every other's through the balanced equation's stoichiometric coefficients.
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When ammonia decomposes to nitrogen and hydrogen, hydrogen forms three times as fast as nitrogen, matching their 3:1 coefficient ratio.
Watch for
Two substances in the same reaction rarely change concentration at equal rates — only equal coefficients produce equal rates.