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# Limiting Reactants

Limiting Reactants. In a perfect world…. We have the perfect amount of out “ingredients” to make our desired product. This is known as being balanced. 2 Na + Cl ₂  2 NaCl. In the REAL world. Nothing is perfect… One of the reactants (ingredients) limits how much product we can make.

## Limiting Reactants

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### Presentation Transcript

1. Limiting Reactants

2. In a perfect world… • We have the perfect amount of out “ingredients” to make our desired product. • This is known as being balanced. • 2 Na + Cl₂  2 NaCl

3. In the REAL world • Nothing is perfect… • One of the reactants (ingredients) limits how much product we can make. • Limiting Reactant- the reactant that determines how much product we can make. • 10 buns, 20 patties, 2 slices of cheese, and 40 strips of bacon 1 bacon double cheeseburger

4. How do I know the limiting reactant? Step 1: write out balanced equation. Step 2: convert each reactant to mass of product Step 3: the reactant that makes the LEAST amount of product is the limiting reactant.

5. What mass of Ag₂S is produced from a mixture of 2.0 g Ag and 2.0 g S ? Step 1: 16 Ag + S₈  8Ag₂S

6. How do I find out how much reactant is left/ in excess ? • Step 1: Convert limiting reactant into mass of non-limiting reactant • Step 2: Subtract amount used from the amount at the beginning.

7. What mass of which reactant is left unreacted?

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