The Ca 2 ion in hard water can be precipitated as CaCO 3 by adding soda ash, Na 2 CO 3 If the calcium ion concentration in hard water is 0 010 M and if the Na 2 CO 3 is added until the carbonate ion concentration is 0 050 M, what percentage of the calcium ions has been removed from the water (You m...

The balanced chemical equation for the precipitati ...

The Ca 2+ ion in hard water can be precipitated as CaCO 3 by adding soda ash,

Question:

The Ca²⁺ ion in hard water can be precipitated as CaCO₃ by adding soda ash, Na₂CO₃. If the calcium ion concentration in hard water is 0.010 M and if the Na₂CO₃ is added until the carbonate ion concentration is 0.050 M, what percentage of the calcium ions has been removed from the water? (You may neglect carbonate ion hydrolysis.) Cengage Learning/Charles D. Winters