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Limiting Reactant A.K.A. Stoichiometry

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Page 1: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

Limiting ReactantA.K.A. Stoichiometry

Page 2: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

One reactant remains while the other is consumed in a reaction

Mole ratio will help determine the limiting reaction

Need to create a conversion pathway

How do we determine which reactant limits the product?

Page 3: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

How Do Hot Fudge Sundaes and Limiting Reactants Relate?

Page 4: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

How Many Sundaes Can You Make?

Page 5: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

Two!

The chocolate syrup limits the recipe!

Page 6: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

Which reactant remains when 6.70 mole Na reacts with 3.2o moles of Cl2 2 Na + Cl22 NaCl

Which reactant is the limiting reactant?

Step 1

Moles of reactant

Moles of product

Page 7: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

2 Na + Cl22 NaCl

Step 1

Step 1

Cl2 is the Limiting Reactant!

Page 8: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

Limiting Reactant Worksheet

It’s Your Turn…

Page 9: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

Which reactant is the limiting reactant when 3.5 g Cu reacts with 6.0 g AgNO3?

Cu + AgNO3Cu(NO3)2 + Ag; balanced?

Cu + 2 AgNO3Cu(NO3)2 + 2 Ag

Limiting Reactant and Mass-Mass Conversions

Page 10: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

We have 3.5 g Cu and 6.0 g AgNO3

Create a Conversion Pathway

Cu + 2 AgNO3Cu(NO3)2 + 2 Ag

Step 1

Mass of Reactant

Moles of Reactant

Step 2

Moles ofProduct

Step 3

Mass of Product

Page 11: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

Cu + 2 AgNO3Cu(NO3)2 + 2 Ag

Silver nitrate is the limiting reactant!

Page 12: Limiting Reactant A.K.A. Stoichiometry. One reactant remains while the other is consumed in a reaction Mole ratio will help determine the limiting

Read pp. 257-258Answer problems pg. 263: 45

Homework


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