Analysis of a water sample revealed that the sample contains the following species.
$CO_3^{2-}, Na^+, H^+, PO_4^{3-}, Al^{3+}, H_2CO_3, Cl^-, Ca^{2+}, Mg^{2+}, HCO_3^-, Fe^{2+}, OH^-$
Concentrations of which of the species will be required to compute alkalinity?
- $CO_3^{2-}, H^+, HCO_3^-, OH^-$
- $CO_3^{2-}, H^+, H_2CO_3, HCO_3^-$
- $CO_3^{2-}, H_2CO_3, HCO_3^-, OH^-$
- $H^+, H_2CO_3, HCO_3^-, OH^-$