Chapter 9 Review Stoichiometry

1
Chapter 9 ReviewStoichiometry

• Milbank High School

2
Chapter 9 - Review

• The calculation of quantities in chemical
  equations is called ____.
• What is conserved in the following reaction
  H2(g) Cl2(g) ? 2HCl(g)
• In every chemical reaction, what item(s) is/are
  conserved?

3
Chapter 9 - Review

• What is true about the total number of reactants
  and the total number of products in the given
  equation C5H12(l) 8O2(g) ? 5CO2(g) 6H2O(g)
• In a chemical equation, the mass of the products
  is equal to _____.

4
Chapter 9 - Review

• How many moles of Al are needed to react
  completely with 1.2 mol FeO?

5
Chapter 9 - Review

• What are some reasons why actual yield is less
  than theoretical yield?
• The reagent present in the smallest amount is ___
  the limiting reagent.
• For a given chemical reaction, the theoretical
  yield is ____ greater than the actual yield.

6
Chapter 9 - Review

• When an equation is used to calculate the amount
  of product that will form, then the value
  obtained is called the _____.

7
Chapter 9 - Review

• When two substances react to form products, the
  reactant which is used up is called the _____.
• What mass of CaO (lime) is produced from 1.5 x
  103 kg of CaCO3? CaCO3(s) ? CaO(s) CO2(g)

8
Chapter 9 - Review

• Identify the limiting reagent, and volume of CO2
  formed when 11.0 L CS2 reacts with 18.0 L O2 by
  CS2(g) 3 O2(g) ? CO2(g) 2SO2(g)

9
Chapter 9 - Review

• How many liters of NH3 are needed to react
  completely with 30.0 L of NO (at STP)? 4 NH3(g)
  6NO(g) ? 5N2(g) 6H2O(g)
• The first step in most stoichiometry problems is
  to _____.

10
Chapter 9 Review

• Terms
• Actual yield
• Limiting reagent
• Theoretical yield
• Stoichiometry
• Percent yield
• Excess reagent