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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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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.