# Chapter3 - 3 Chemical Equations Reaction Reaction Stoichiometry Chapter Three Goals Chapter Three Goals 1 2 3 4 5 6 7 8 9 Chemical Equations

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Chemical Equations & eaction 3 Reaction Stoichiometry

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hapter Three Goals Chapter Three Goals 1. Chemical Equations 2. Calculations Based on Chemical Equations 3. The Limiting Reactant Concept 4. Percent Yields from Chemical Reactions 5. Sequential Reactions . oncentrations of Solutions 6. Concentrations of Solutions 7. Dilution of Solutions sing Solutions in Chemical Reactions 8. Using Solutions in Chemical Reactions 9. Synthesis Question 2
hemical Equations Chemical Equations Symbolic representation of a chemical reaction that shows: 1. reactants on left side of reaction roducts on right side of equation 2. products on right side of equation 3. relative amounts of each using stoichiometric coefficients 3

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hemical Equations Chemical Equations • Attempt to show on paper what is happening at the laboratory and molecular levels. 4
hemical Equations Chemical Equations • Look at the information an equation provides: Fe O + 3 CO 2 Fe + 3 CO Δ ⎯→ 3 Reactants Yields Products 5

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hemical Equations Chemical Equations • Look at the information an equation provides: Fe O + 3 CO 2 Fe + 3 CO Δ ⎯→ 3 Reactants Yields Products formu la atoms 1 formula unit 3 molecules 2 atoms 3 molecules 6
hemical Equations Chemical Equations • Look at the information an equation provides: Fe O + 3 CO 2 Fe + 3 CO Δ ⎯→ 3 Reactants Yields Products formu la atoms 1 formula unit 3 molecules 2 atoms 3 molecules mo le moles moles moles 1 mole 3 moles 2 moles 3 moles 7

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hemical Equations Chemical Equations • Look at the information an equation provides: Fe O + 3 CO 2 Fe + 3 CO Δ ⎯→ 3 Reactants Yields Products formu la atoms 1 formula unit 3 molecules 2 atoms 3 molecules mo le moles moles moles 1 mole 3 moles 2 moles 3 moles 159.7 g 84.0 g 111.7 g 132 g 8
hemical Equations Chemical Equations • Law of Conservation of Matter – There is no detectable change in quantity of matter in an ordinary chemical reaction. – Balanced chemical equations must always include the same number of each kind of atom on both sides of the equation. his law was determined by Antoine Lavoisier – This law was determined by Antoine Lavoisier. 9

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hemical Equations Chemical Equations Propane,C 3 H 8 , burns in oxygen to give carbon dioxide and water. 10
aw of Conservation of Matter Law of Conservation of Matter NH 3 burns in oxygen to form NO & water You do it! 11

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aw of Conservation of Matter Law of Conservation of Matter C 7 H 16 burns in oxygen to form carbon dioxide and water. You do it! 12
Calculations Based on Chemical Equations • Can work in moles, formula units, etc. requently we work in mass or weight Frequently, we work in mass or weight (grams or kg or pounds or tons). F + 3 CO 2 Fe Δ e O e 2 3 2 13

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Calculations Based on Chemical Equations Example 3-1: How many CO molecules are required to react with 25 formula units of Fe 2 O 3 ?
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## This note was uploaded on 05/24/2011 for the course ENGINEERIN 1 taught by Professor Lee during the Spring '11 term at Sungkyunkwan.

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Chapter3 - 3 Chemical Equations Reaction Reaction Stoichiometry Chapter Three Goals Chapter Three Goals 1 2 3 4 5 6 7 8 9 Chemical Equations

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