Topic #1: Background

• The most common activity in any Analytical

  Chemistry Laboratory is the preparation of solution

  of known concentration.
• Solution – homogeneous mixture containing two or

  more substances in varying proportions.
• Solute – component of solution being dissolved.
• Solvent – dissolving medium that determines the

  state of the substance.
• They are often associated with liquid samples, but can be extended to gas-phase and solid-phase samples.
• Concentration – measure of quantity of solute

  present in a given quantity of solvent or solution.
• In Analytical Chemistry, we usually deal with

  aqueous liquid solution.
• Aqueous Solutions – make use of water as solvent.
• The actual units for reporting concentration depend

  on how the amounts of solute and solution are

  measured.
• What is the name of this symbol “M”?

  Molarity
• What is the name of this symbol “F”?

  Formality
• What is the name of this symbol “%w/w”?

  Weight %
• What is the name of this symbol “% v/v”?

  Volume %
• What is the name of this symbol “ppt”?

  Parts per thousand
• What is the name of this symbol “ppm”?

  Parts per million
• What is the name of this symbol “ppb”?

  Parts per billion
• What is this unit for?

  Molarity

  
• What is this unit for?

  Formality

  
• What is this unit for?

  Weight

  
• What is this unit for?

  Volume

  
• What is this unit for?

  Parts per thousand

  
• What is this unit for?

  Parts per million

  
• What is this unit for?

  Parts per billion