IX.1 Behavior of many acids and bases can be explained by the Arrhenius theory. Arrhenius acids and bases are electrolytes. (3.1uu)

IX.2 An electrolyte is a substance which, when dissolved in water, forms a solution capable of conducting an electric current. The ability of a solution to conduct an electric current depends on the concentration of ions.(3.1rr)

IX.3 Arrhenius acids yield H + (hydrogen ion) as the only positive ion in an aqueous solution. The hydrogen ion may also be written as H3O + (aq), hydronium ion. (3.1vv)

IX.4 Arrhenius bases yield OH - (aq), hydronium ion as the only negative ion in an aqueous solution. (3.1ww)

IX.5 In the process of neutralization, an Arrhenius acid and an Arrhenius base react to form a salt and water. (3.1xx)

IX.6 Titration is a laboratory process in which a volume of solution of known concentration is used to determinethe concentration of another solution. (3.1zz)

IX.7 There are alternate acid-base theories. One theory states that an acid is an H + donor and a base is an H + acceptor. (3.1yy)

IX.8 The acidity or alkalinity of a solution can be measured by its pH value. The relative level of acidity or alkalinity of a solution can be shown by using indicators. (3.1ss)

IX.9 On the pH scale, each decrease of one unit of pH represents a tenfold increase in hydronium ion concentration. (3.1tt)