Mr. Quinn & Ms. Tom       February 11, 2014
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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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The steps

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

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

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 fluorine1

Example 1: Carbon and Fluorine

1 C+ 2F2 1 CF4

  • Find the molar mass of both reactants and oneproduct


Example 1 carbon and fluorine2

Example 1: Carbon and Fluorine

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


Example 2 aluminum and fluorine

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

Example 1: Aluminum and Fluorine

2 Al+ 3F2 2 AlF3

  • Find the molar mass of both reactants and oneproduct


Example 1 aluminum and fluorine1

Example 1: Aluminum and Fluorine

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


Example 1 sulfur and fluorine

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 fluorine3

Example 1: Carbon and Fluorine

1 S8 + 8F2 8 SF2

  • Find the molar mass of both reactants and oneproduct


Example 1 carbon and fluorine4

Example 1: Carbon and Fluorine

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


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