Calcium chloride, Ca Cl2 is a strong electrolyte which means that if fully ionizes. This is the ionization equation:
CaCl2 ---> Ca(2+) + 2 Cl(-).
So, per each mole of CaCl2 1 mole of Ca(2+) and 2 moles of Cl(-) are produced.
That means that the concentration of Ca(2+) is the same concentration of CaCl2 and the concentration of Cl(-) is twice the concentration of CaCl2.
=> [Ca(2+)] = 0.15 M, and [Cl-] = 2 * 0.15M = 0.30M
Answer:
[Ca(2+)] = 0.15M
[Cl(-)] = 0.30 M