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Limiting Reactant 1 frame and 3 wheels are needed to create one tricycle If I have 10 frames and 12 wheels, how many tricycles can I make? 4 I have excess.

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Presentation on theme: "Limiting Reactant 1 frame and 3 wheels are needed to create one tricycle If I have 10 frames and 12 wheels, how many tricycles can I make? 4 I have excess."— Presentation transcript:

1 Limiting Reactant 1 frame and 3 wheels are needed to create one tricycle If I have 10 frames and 12 wheels, how many tricycles can I make? 4 I have excess frames. My wheels limit how many tricycles I can make.

2 Limiting reactant is the reactant that is all consumed. Excess reactant is the reactant that is not all consumed.

3 N 2 H 4 + 2H 2 O 2  N 2 + 4H 2 O Which is the limiting reactant when moles of N 2 H 4 is mixed with mole of H 2 O 2 ? How much water will form if all reactants react? mole N 2 H 4 x 4mole H 2 O = 3.0 mole H 2 O 1 mole N 2 H 4 1 mole N 2 H mole H 2 O 2 x 4 mole H 2 O = 1.00 mole H 2 O 2 mole H 2 O 2 2 mole H 2 O 2 limiting

4 N 2 H 4 + 2H 2 O 2  N 2 + 4H 2 O How much of the excess reactant (in moles) remains unchanged? moles H 2 O 2 x 1 mole N 2 H 4 =.250 mole N 2 H 4 2 mole H 2 O 2 2 mole H 2 O mole mole =.500 mole N 2 H 4 limitingexcess

5 Summary Determine how much product will form if all of each reactant reacts. The reactant which forms the least amount of product is the limiting reactant. The amount of limiting reactant determines how much product can be formed.


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