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Mr. Quinn & Ms. Tom February 11, 2014 Aim: How do we determine the limiting reagent in a chemical reaction? Do Now: balance the following chemical equation. ___ YCl 3 + ___ NbBr 5  __ YBr 3 + ___ NbCl 5. The Steps. Balance the equation

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The Steps

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Mr. Quinn & Ms. Tom February 11, 2014Aim: How do we determine the limiting reagent in a chemical reaction?Do Now: balance the following chemical equation.___ YCl3 + ___ NbBr5 __ YBr3 + ___ NbCl5

### The Steps

• Balance the equation

• Solve for the amount of product formed for each reactant

• You will get different numbers

• Whichever reactant formed a smaller amount of product is your limiting reagent.

### Example 1: Carbon and Fluorine

• Graphite (C) burns in fluorine according to the following unbalanced equation. If 16 g of carbon are burned with 48 g of fluorine, what is the limiting reagent?

• Balance the equation (list the elements, tally the elements, solve)

C+ F2  CF4

### Example 1: Carbon and Fluorine

1 C+ 2F2 1 CF4

• Find the molar mass of both reactants and oneproduct

### Example 1: Carbon and Fluorine

• Use dimensional analysis to predict the product formation from both reactants.

### Example 2: Aluminum and Fluorine

• Aluminum (Al) burns in fluorine according to the following unbalanced equation. If 16 g of aluminum are burned with 57 g of fluorine, what is the limiting reagent?

• Balance the equation (list the elements, tally the elements, solve)

Al+ F2 AlF3

### Example 1: Aluminum and Fluorine

2 Al+ 3F2 2 AlF3

• Find the molar mass of both reactants and oneproduct

### Example 1: Aluminum and Fluorine

• Use dimensional analysis to predict the product formation from both reactants.

### Example 1: Sulfur and Fluorine

• Sulfur (S8) burns in fluorine according to the following unbalanced equation. If 128 g of sulfur are burned with 144 g of fluorine, what is the limiting reagent?

• Balance the equation (list the elements, tally the elements, solve)

S8 + F2  SF2

### Example 1: Carbon and Fluorine

1 S8 + 8F2 8 SF2

• Find the molar mass of both reactants and oneproduct

### Example 1: Carbon and Fluorine

• Use dimensional analysis to predict the product formation from both reactants.