1. “Stoichiometry with a twist”
Limiting Reactants
“Stoichiometry with a twist”

2. Remember the Stools?

3. 1 Top + 3 Legs  1 Stool 

4. 1 Top and 6 Legs  ?

5.  1 Stool

6. 1 Top and 30 Legs  ?

7.  1 Stool!

8. A Chemistry Example

9. 1 NaHCO3 + 1 HC2H3O2  1 NaC2H3O2 + 1 CO2 + 1 H2O 
+ 1

10. How many moles CO2 produced?
 ?

11. Don’t forget our equation!
1 NaHCO3 + 1 HC2H3O2  1 NaC2H3O2 + 1 CO2 + 1 H2O
 1
Left over

12. What was our limiting reactant?
 1 1
We ran out of vinegar before baking soda – vinegar is our limiting reagent!

13. WHITEBOARDING Identify the limiting reactant and determine the moles of salt produced in a reaction between 3 moles of sodium metal and 70.9 g of Cl2 gas.