Chapter 5, Problem 23E

What reagent solution might you use to separate the cations the following matures, that is, with one in appearing in solution and the otherin a precipitate? (Hint: Refer to Table 5.1, and consider water also to a reagent.)
a. ${\text{BaCI}}_{\text{2}}\left(\text{s}\right)$ and ${\text{MgCI}}_{\text{2}}\left(\text{s}\right)$
b. ${\text{MgCO}}_{\text{2}}\left(\text{s}\right)$ and ${\text{NaCO}}_{\text{2}}\left(\text{s}\right)$
a. ${\text{AgNO}}_{\text{2}}\left(\text{s}\right)$ and $\text{Cu}{\left({\text{NO}}_{\text{2}}\right)}_{\text{2}}\left(\text{s}\right)$