6.4 "Your water and your health" An advertising flyer from the local water district gives the following data concerning the tap water that they deliver to customers (concentrations of minor ions such as iron and manganese are omitted). No information is given about other ions, but you may assume that the other dominant species are HCO3and CO32. (a) What is the equilibrium ratio of [HCO3]to [CO32] in this water? (b) Write an electroneutrality relationship for this water. (c) Use the electroneutrality relationship and the data given to determine the molar concentration of HCO3. (d) Evaluate each of the following properties of the water: (i) Total hardness (meq/L) (ii) Carbonate hardness (meq/L) (iii) Ionic strength (M) (iv) Alkalinity (meq/L)