C4

• Describe how magnesium can be used to distinguish between a strong and a weak acid of the same concentration

  • See if magnesium disappears
  • at a greater rate with a strong acid
• Strong acids have a...

  lower pH
• As the pH decreases by one unit...

  the concentration of hydrogen ions increases by a factor of 10
• A dilute acid will have...

  fewer acid molecules in a given volume