1. Limiting Reactants
Part 1

2. Diahaytsu Motor Company
A super-economy, entry level fuel efficient car produced in Tauchsikistan is being mass produced as an inexpensive mode of transportation for people in 3rd world countries.
The Diahaytsu requires 4 tires, 3 doors, 2 headlights, 1 small engine all mounted a single aluminum frame.
4 tires doors headlights engine frame → 1 Diahaytsu

5. Pimp My Ride

7. Doors limit the production
4 tires doors headlights engine frame → 1 Diahaytsu
1) How many Diahaytsu’s can be assembled if the manufacturer only has 132 tires?
33 cars
2) How many Diahaytsu’s can be produced if the company only has 204 doors and 317 tires?
68 cars
Doors limit the production

8. Headlights limit the production
4 tires doors headlights engine frame → 1 Diahaytsu
1) If the manufacturer has 117 headlights, 62 frames, 289 tires and 191 doors, how many vehicles can be made?
58 cars
Headlights limit the production

9. Limiting Reactants
The chemical (or molecules) in a reaction that will determine “how far” the reaction will go
once the limiting reactant is “used up” the reaction will stop
ex: Doors and Headlights….

10. Problem #1: 1.37 grams H2O 9.45 grams H2O 2 H2 + O2 → H2O 2
How much water will be produced if 1.22 grams of O2 react with 1.05 grams of H2?
Limiting
Reactant 2
H O2 → H2O 2
1.22 g O2
1 mole O2
2 mole H2O
18 g H2O
1 mole H2O
32 g O2
1 moles O2
1.37 grams H2O
1.05 g H2
1 mole H2
2 mole H2O
18 g H2O
1 mole H2O
2 grams H2
2 moles H2
9.45 grams H2O

11. Problem #2: 32.3 grams Br2 228.57 grams Br2 2
Identify the limiting reactant if 40 grams of FeBr3 react with 100 grams Cl2?
Limiting
Reactant 2
FeBr Cl2 → FeCl3 + Br2 3 2 3
40 g FeBr3
1 mole FeBr3
3 mole Br2
160 g Br2
1 mole Br2
296 g FeBr3
2 moles FeBr3
32.3 grams Br2
100 g Cl2
1 mole Cl2
3 mole Br2
160 g Br2
1 mole Br2
70 g Cl2
3 moles Cl2
grams Br2

12. C6H6 is the limiting reactant
Challenge
Determine the limiting reactant in following reaction:
Given 117 grams of C6H6 reacts with 400 grams of O2 2
C6H O2 → CO H2O 15 12 6
C6H6 is the limiting reactant