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

Remember the Stools?

1 Top + 3 Legs  1 Stool 

1 Top and 6 Legs  ?

 1 Stool

1 Top and 30 Legs  ?

 1 Stool!

A Chemistry Example

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

How many moles CO2 produced? 2 + 1  ?

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

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

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.