Chapter 10 Homework and Learning Objectives Honor Chemistry
Chapter 10 Homework Honor Chemistry
Nomenclature (CH 5, 6, 7) and Writing a Balanced Chemical Equation (CH9) will be used throughout CH 10. Study nomenclature nightly.
-Read 10.1 and take notes, complete the sample and practice problems in the reading Pgs. 351-355, Complete 10.1 WS’s, Section Rv. Pg. 356, 1-7
-Read 10.2 and take notes, complete the sample and practice problems in the reading pgs. 359, 363-365, Section Rv. Pg. 366, 1-10. Complete 10.2 WS’s
-Read 10.3 and take notes, complete the sample and practice problems in the reading pg. 369,371 374, Complete Section Review pg. 374, 1-7. Complete 10.3 WS’s
-Limiting Reactant/ %Yield (Rice Krispy) Lab
-Stoich Football Lab
-Chapter Review pg. 377 Term Rv. 1-8, C&S 3,5,6,10,12-14, 19, 23-27, Test Prep 1-11.
Crib Sheet
Test 10
Chapter 10 Learning Objectives
10.1 Stoichiometry
Stoichiometry- apply the mole concept (molar ratios) to relate quantities of reactants and products in a balanced chemical equation
How to do Stoichiometry
1. Balanced chemical equation
2. Bookkeeping step under the balanced equation, record given (# and unit) and draw an arrow to what you are solving for and indicate desired unit.
3. Given converted to moles.
4. Stoich it! Use the coefficients in the balanced equation to determine the molar ratio between given and desired substance. Coefficients = Molar ratios
5. Convert final answer to desired unit (grams, L, etc.).
6. Do steps 3-5, using dimensional analysis, units must cancel, apply significant figures to the final answer.
Virtual Stoichiometry Lab:
Prelab-
Read the Encyclopedia of Earth Article on Combustion
Combustion Stoichiometry Virtual Lab
10.2 Limiting Reactants, Excess Reactants and Percent Yield
-limiting reactant
-excess reactant
-theoretical yield
-actual yield
-percent yield
To find L.R. set up two equations. Compare Reactant A to product A, compare Reactant B to product A. The reactant that produces less product is the limiting reactant.
The limiting reactant will limit the amount of product that can be made. The limiting reactant will be completely used up by the reaction, the other reactants will have some amount left over, the left overs are called excess reactants.
Pg. 362 Percent Yield= actual yield/theorectical yield(expected yield) x 100
Expected or theoretical yield –the amount of product that should be produced based on stoichiometry calculations.
Actual yield- The amount of product that is actually obtained from the chemical reaction. Completing the lab and weighing your product. (Given to you)
What are some reasons why actual yield is often lower than expected yield?
Limiting Reactant Simulation (Non chemistry Example)
Limiting Reactant Simulation (Combustion Example)
Another way to solve for limiting reactant is to compare reactant to reactant.
10.3 Application of Stoichiometry
-Air bag stoichiometry and density
Sodium Azide, Airbags, Environmental Hazard
-Engine efficiency
-Pollution control
Acid/Base Universal Indicator Lab
Visit the Nomenclature web-sites below.
Rules for Naming Inorganic Compounds One error on the table Hg2+2 is called Mercury (I) or mercurous
Use this link to practice IC/roman numeral usage: Nomenclature of Simple Compounds- Transition Metals
Use this link to practice IC and CC: Nomenclature of Simple Compounds- Formulas to Names
Use this link to practice IC and CC: Nomenclature of Simple Compounds- Names to Formulas
