Final answer:
If you dissolve enough CaCl₂•H₂O in water to reach the solubility limit, the water would not boil if the water was initially 20.0°C.
Step-by-step explanation:
The solubility limit of CaCl₂•2H₂O in boiling water is 152 g CaCl₂•H₂O in 100 g water. If you dissolve enough CaCl₂•H₂O in water to reach this solubility limit, the water would not boil if the water was initially 20.0°C. This is because the boiling point of the solution is raised to 100.31°C, which is still below the initial temperature of the water.