Exp' 8 Objectives

1
Exp. 8 Objectives

• To determine the limiting reactant in a mixture
  of two soluble salts.
• To determine the percent composition of each
  substance in the mixture.

2
Exp. 8 Introduction

• Two factors affect the yield of products in a
  chemical reaction
• the amounts of starting materials (reactants)
• the percent yield of the reaction.
• Percent yield - _actual yield x 100
• theoretical yield

3
Exp. 8 Introduction

• Because chemicals react according to fixed mole
  ratios (stoichiometrically), only a limited
  amount of product can form from given amounts of
  starting materials. The reactant determining the
  amount of product generated is called the
  limiting reactant.

4
Exp. 8 Procedural Notes

• Part A
• Step 2a. - warm the solution for 15 minutes DO
  NOT BOIL.
• Step 3. - Use vacuum filtering
• Step 5. - wash any remaining precipitate onto the
  filter paper with several (3-4) 5 mL volumes of
  warm DI-water.
• Step 6. - Dry in oven for 30 minutes.

5
Exp. 8 Report Sheet

• Questions 1 and 2