Multiple choice) Which one statement concerning the Acid-Base Critical Ideas is NOT correct? As Sr(OH)2 is a strong base (that is correct!), the Sr2+ ion has no acid-base properties For a conjugate pair, HA and A,Ka of HAKb of A=Kw=1.01014 When NH4Br dissolves in water, the dissolved salt, NH4Br(aq), breaks down reversibly into its ions: NH4Br(aq) NH4+(aq)+Br(aq) The equilibrium constant for the reaction: HA+H2OA+H3O+ is called Ka of the acid HA. All acidic aqueous solutions contain both H3O+ and OH - ions