Sodium carbonate cannot be used in place of \[{{(N{{H}_{4}})}_{2}}C{{O}_{3}}\] for the identification of \[C{{a}^{2+}},B{{a}^{2+}}\]and \[S{{r}^{2+}}\] ions (in group V) during mixture analysis because:

• A. \[M{{g}^{2+}}\] ions will also be precipitated.
• B. Concentration of \[CO_{3}^{2-}\] ions is very low.
• C. Sodium ions will react with acid radicals.
• D. \[N{{a}^{+}}\] ions will interfere with the detection of \[C{{a}^{2+}},B{{a}^{2+}},S{{r}^{2+}}\] ions.