Stoichiometry Definition

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Stoichiometry The calculation of quantities using chemical reactions
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Presentation transcript:

Stoichiometry Definition Section 1 Introduction to Stoichiometry Stoichiometry Definition Composition stoichiometry - mass relationships of elements in compounds Reaction stoichiometry - mass relationships between reactants and products in a chemical reaction

Section 1 Introduction to Stoichiometry Mole Ratio mole ratio - conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction Example: 2Al2O3(l)  4Al(s) + 3O2(g) Mole Ratios: 2 mol Al2O3 2 mol Al2O3 4 mol Al 4 mol Al 3 mol O2 3 mol O2 , ,

Reaction Stoichiometry Problems Section 1 Introduction to Stoichiometry Reaction Stoichiometry Problems Problem Type 1: Given and unknown quantities are amounts in moles. Amount of given substance (mol) Problem Type 2: Given is an amount in moles and unknown is a mass Amount of given substance (mol) Amount of unknown substance (mol) Amount of unknown substance (mol) Mass of unknown substance (g)

Reaction Stoichiometry Problems Section 1 Introduction to Stoichiometry Reaction Stoichiometry Problems Problem Type 3: Given is a mass and unknown is an amount in moles. Mass of given substance (g) Problem Type 4: Given is a mass and unknown is a mass. Mass of a given substance (g) Amount of given substance (mol) Amount of given substance (mol) Amount of unknown substance (mol) Mass of unknown substance (g) Amount of unknown substance (mol)

Stoichiometry Calculations Section 1 Introduction to Stoichiometry Stoichiometry Calculations

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