When acetic acid is dissolved in water, it dissociates partly into H+ and H3O+ and CH3COO‾ ions as: CH3COOH + H2O CH3COO‾ + H3O+ In dilute solution , concentration of water is constant. The product of K and constant The product of K and is denoted by Ka, the ionization constant or dissociation constant of the acid. If C represents the initial … [Read more...] about Ionisation of Weak Electrolytes