Acid Base Titrations

1
Acid Base Titrations

• Chm 3.2.3

2
Titration

• The controlled addition and measurement of the
  amount of a solution with a known concentration
  required to react completely with a measured
  amount of a solution with an unknown concentration

3
Acid Base Reaction

• HCl NaOH ? H2O NaCl
• H Cl- Na OH- ? H2O Na Cl-
• H OH- ? H2O
• In an acid base neutralization reaction H in
  being neutralized by OH- to form H2O

4
Acid Base Stoichiomety

• What concentration of 100 mL of an NaOH is needed
  to neutralize 200 mL of a 0.5 M HCl solution.
• 200 mL of 0.5 M HCl
• 0.10 mole HCl 0.1 moles H
• H OH- ? H2O
• 0.1 moles OH- 0.1 mole NaOH
• in 100 mL 1.0 M solution of NaOH

5
When H and OH- are 11 mole ratio

• For a neutralization reaction
• MAVA MBVB
• Proven by previous example
• (0.5 M HCl x 200 mL) (1.0 M NaOH x 100 mL)

6
Example

• What volume of a 0.3 M HCl solution will be
  needed to neutralize 500 mL of a 0.1 M KOH
  solution?