Strong+weak acids

• Strong acid

  Acid that ionizes completely, all acid particles dissociate to release hydrogen ions
• Weak acid

  Acid that doesn't fully ionize, only a small portion of acid particles dissociate to release hydrogen ions
• Dissociation of ethanoic acid

  1. Reactants form products

  2. Products can react to reform reactants (reversible reaction)
• Equilibrium of weak acid dissociation lies to the left, more undissociated acid molecules than dissociated
• Acid strength

  Proportion of acid molecules that ionize in water
• Concentration

  Amount of acid per unit volume
• Strong and weak acids can both be at high or low concentrations
• pH

  Measure of hydrogen ion concentration in solution
• As hydrogen ion concentration increases

  pH decreases
• Decrease of 1 pH unit

  Hydrogen ion concentration increases by a factor of 10
• High concentration of strong acid

  Low pH
• High concentration of weak acid

  Low pH
• At any given concentration, a strong acid will have a lower pH than a weak acid