Chapter 9: Chemical Quantities

stoichiometry

the part of chemistry that relates amounts of substances in chemical reactions

limiting reactants

the substance that runs out first in a reaction; determines the amount of product that can form

mole relationships

coefficients quantitatively relate particles or moles of all reactants and products

mole ratio

ratio by moles of two compounds in a balanced chemical equation

theoretical yield

amount of product produced when all of the limiting reactant is consumed

actual yield

amount of product actually produced (experimentally found number)

percent yield

when a chemical reaction actually occurs, it never uses up all the reactants, ratios of the actual yield and theoretical yield

solving limiting reactant

1. calculate moles of reactants 2. determine limiting reactant 3. determine amount of product produced by using the number of moles of the limiting reactant to calculate the mass of product produced