(Solved): Calculate the concentration of the ion indicated in each of the following solutions. The use of sq ...

Calculate the concentration of the ion indicated in each of the following solutions. The use of square brackets [ ] denotes concentration in \( \mathrm{mol} \mathrm{L}^{-1} \). (3) (a) \( \left[\mathrm{K}^{+}\right] \)in \( 0.238 \mathrm{M} \mathrm{KNO}_{3} \) (b) \( \left[\mathrm{Al}^{3+}\right] \) and \( \left[\mathrm{SO}_{4}{ }^{2-}\right] \) in \( 0.080 \mathrm{M} \mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3} \)