# How can I calculate molality of ions in solution?

Consider another ionic compound, calcium chloride, which has the formula, $C a C {l}_{2}$. If you 1.0 molal of this compound is dissolved in water, you obtain a 1.0 molal concentration of calcium and 2.0 molal concentration of chloride ions since when calcium chloride dissolves, it dissociates into three ions, one calcium and two chloride ions.