Problem 11-95

To know if the salt can melt the ice, calculate the freezing point depression of water with CaCl₂ at maximum concentration (74.5 g CaCl₂ / 100 g water)

Then, check if T_f - ΔT_f < road temperature. If so, the salt is effective to melt the ice.

The solvent is water (ice) therefore K_f = 1.86 °C.kg.mol^-1

F = (°C × 1.8) + 32