acids and redox

• in water an acid releases hydrogen ions into solution
• a strong acid releases all of its hydrogen ions in solution and completely dissociates
• a weak acid only releases a small number of its hydrogen ions in solution and partially dissociates
• moles = conc x vol (dm3)
• Concentration = mass (g) / volume (dm3)
• New concentration = (original volume/ new volume) x original concentration
• When you make a measurement there is uncertainty in the measurement
• The uncertainty is half the smallest possible unit you can make