5.5 - Amounts in Solutions

• what does concentration show

  how much solute is dissolved in a certain volume of solution
• units for concentration

  g dm-³ or mol dm-³
• equation for concentration in g dm-³

  mass of solute (g) ÷ volume of solution (dm³)
• equation for concentration in mol dm-³

  amount of solute (mol) ÷ volume of solution(dm³)
• converting from mol dm-³ to g dm-³

  ×Mr
• converting from g dm-³ to mol dm-³

  ÷Mr
• meaning of moles dm-³

  for every 1dm³ there x number of moles