Final answer:
The total anion concentration of the solution is 20.0 meq/L.
Step-by-step explanation:
The total anion concentration can be calculated by adding together the individual anion concentrations in the solution. The anion concentration for each compound can be determined by multiplying its concentration in equivalents per liter (meq/L) by its valence factor. Since the valence factor for Nat is 1, the anion concentration for Nat is 5.0 meq/L. Since the valence factor for Ca2+ is 2, the anion concentration for Ca2+ is 12.0 meq/L. Since the valence factor for Cl- is 1, the anion concentration for Cl- is 3.0 meq/L.
To calculate the total anion concentration, we add the anion concentrations of NaCl and CaCl2: