Tuesday 42407 Aday

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Tuesday 4/24/07A-day

• Reaction Stoichiometry (Ch 12)

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Paper work

• Stuff to collect

• Stuff to distribute

• SR 12.2

• SR 12.1
• V 12

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Homework

• Tuesday SR 12.2 (and anything prior)
• Wednesday SR 12.3
• Thursday nothing
• Friday Flowchart

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Objectives for CH 12

• Define stoichiometry and distinguish between
  composition and reaction stoichiometry.
• Identify the major types of reaction
  stoichiometry problems.
• Perform mol-mol, mol-volume, mol-mass, mass-mol,
  mass-volume, and mass-mass stoichiometric
  calculations given ideal conditions.
• Identify the limiting reactant in a chemical
  reaction.
• Perform mol-mol, mol-volume, mol-mass, mass-mol,
  mass-volume, and mass-mass stoichiometric
  calculations using a limiting reactant.
• Perform calculations involving the percent yield
  of a chemical reaction.

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Visual Concepts

• What is reaction stoichiometry?
• What is a mole ratio?
• What is a mass to mole reaction stoichiometry
  problem?
• What is a mass to mass reaction stoichiometry
  problem?
• What is a limiting reactant?
• What is the difference between actual yield and
  theoretical yield?

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Whiteboard

• 2 people per team
• If we have extra people, then we go to groups of
  3.
• Your performance is being graded.
• At the end of the week the average score will be
  assigned a 90 grade.
• The more problems that you solve the more points
  you will get.

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Composition vs. Reaction Stoichiometry

• Composition Stoichiometry deals only with mass
  relationships with in a compound.
• Reaction Stoichiometry deals with mass
  relationships in chemical reactions.

Mol Ratio
Reactant (Given)
Product (Find)
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General Factor-Label

• All mol-mol stoichiometry problems will follow
  this pattern.
• The critical conversion factor is the mol ratio.

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General Factor-Label

• All mol-mass stoichiometry problems will follow
  this pattern.
• The critical conversion factors are the mol ratio
  and the molar mass of the Find.

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General Factor-Label

• All mass-mol stoichiometry problems will follow
  this pattern.
• The critical conversion factors are the mol ratio
  and the molar mass of the Given.

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General Factor-label

• Mass to mass problems are a combination of all of
  the previous types.
• All mass-mass stoichiometry problems will follow
  this pattern.
• The critical conversion factors are the mol
  ratio, the molar mass of the Find, and the molar
  mass of the Given.