(NR) March 14, 2011: Acid-Base Reactions

• Strong Acids dissociate to produce H+ ions.
  - HCl, H2SO4, HClO4
• Strong Bases dissociate to produce OH- ions.
  - NaOH, Ba(OH)2, LiOH
• When the Strong Acids and Strong Bases mix they form H2O and an ionic salt
  (The total volume changes!)
  
  
  pH and pOH- pH is a measure of the hydrogen ions present in a solution     > pH = -log[H+]
  - pOH is a measure of the hydroxide ions present in a solution > pOH = -log[OH-]
  
  
  EXAMPLE!
  0.200L of 0.500 M HCl is added to 0.200L of 0.500M LiOH.
  What is the mass of water produced?
  
  
  LiOH + HCl  --> H2O  + LiCl
  
  
  .500mol/L x 0.200L x 1/1 x 18g/mol = 1.8g
  
  
  What is the mass of the salt produced?
  
  
  0.500mol/L x 0.200L x 1/1 x 42.4g/mol = 4.24g