Limiting ReactantA.K.A. Stoichiometry

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?

How Do Hot Fudge Sundaes and Limiting Reactants Relate?

How Many Sundaes Can You Make?

Two!

The chocolate syrup limits the recipe!

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

2 Na + Cl22 NaCl

Step 1

Step 1

Cl2 is the Limiting Reactant!

Limiting Reactant Worksheet

It’s Your Turn…

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

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

Cu + 2 AgNO3Cu(NO3)2 + 2 Ag

Silver nitrate is the limiting reactant!

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

Homework