Grade 11 · Chemistry
The meaning of the coefficients
Why it matters
Reading mole ratios from a balanced equation.
Core20m readingPrerequisite: None
What is stoichiometry?
Short answer
Stoichiometry is the quantitative relationship between the amounts of reactants and products in a chemical reaction, read from the coefficients of a balanced equation. Those coefficients give the mole ratio, which lets you convert a known amount of one substance into the amount of any other substance in the reaction — the core calculation of quantitative chemistry.
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Frequently asked questions
- What is a mole ratio?
- The ratio of coefficients between two substances in a balanced equation, used to convert moles of one into moles of another.
- What is a limiting reactant?
- The reactant that runs out first and therefore limits how much product can form.