Table of Contents

1
Stoichiometry
Table of Contents
Section 1 Introduction to Stoichiometry
Section 2 Ideal Stoichiometric
Calculations Section 3 Limiting Reactants
and Percentage Yield
2
Objective
Section 1 Introduction to Stoichiometry

• Define stoichiometry.
• Describe the importance of the mole ratio in
  stoichiometric calculations.
• Write a mole ratio relating two substances in a
  chemical equation.

3
Stoichiometry Definition
Section 1 Introduction to Stoichiometry

• Composition stoichiometry
• .
• Reaction stoichiometry.

4
Reaction Stoichiometry Problems
Section 1 Introduction to Stoichiometry
Problem Type 2 Given is an amount in __________
and unknown is a ____________. Amount of given
substance (mol)
Problem Type 1 Given and unknown quantities are
amounts in ____________. Amount of given
substance (mol)
Amount of unknown substance (mol)
Amount of unknown substance (mol)
Mass of unknown substance (g)
5
Reaction Stoichiometry Problems, continued
Section 1 Introduction to Stoichiometry
Problem Type 4 Given is a _______ and unknown is
a __________. Mass of a given substance (g)
Problem Type 3 Given is a ____________ and
unknown is an amount in _____________. Mass of
given substance (g)
Amount of given substance (mol)
Amount of unknown substance (mol)
Amount of given substance (mol)
Mass of unknown substance (g)
Amount of unknown substance (mol)
6
Mole Ratio
Section 1 Introduction to Stoichiometry

• A mole ratio is a conversion factor that
• Example 2Al2O3(l) ? 4Al(s) 3O2(g)
• Mole Ratios

,
,
7
Converting Between Amounts in Moles
Section 1 Introduction to Stoichiometry
8
Stoichiometry Calculations
Section 1 Introduction to Stoichiometry