Acid and bases

• strong acid / strong base

  
• Weak acid / strong base

  
• Strong acid / weak bass

  
• Weak acid / weak base

  
• explain why at this point the concentration of H+ ions decreases ?

  1. The total volume increases as NaOH solution is added.
  2. OH- ions react with H+ ions to form water (OH- + H+ —> H2O)