Chapter 5, Problem 8E

Which solution has the greatest $\left[{\text{SO}}_4^{2-}\right]$ ?
a. $\text{0}{\text{.075 M H}}_{\text{2}}{\text{SO}}_{\text{4}}\text{;}$
b. $\text{0}{\text{.22 M MgSO}}_{\text{4}}\text{;}$
c. $\text{0}{\text{.15M Na}}_{\text{2}}{\text{SO}}_{\text{4}}\text{;}$
d. $\text{0}{\text{.080 M AI}}_{\text{2}}{\left({\text{SO}}_{\text{4}}\right)}_{\text{2}}\text{;}$
e. $\text{0}{\text{.20 M CuSO}}_{\text{4}\text{.}}$