To determine the dissociation constant of acetic acid and verify Ostwald’s dilution law.
Conductometer, burette, pipette, beaker, volumetric flask (100 ml), acetic acid, conductivity water.
Suppose a weak electrolyte AB dissociates in V litre of solution with initial concentration of one mole per litre. At equilibrium, its concentration will be as under:
where a is degree of dissociation.
On applying the law of mass action, we get
where K is the dissociation constant of the substance. ...