Question

why is solid CaCl2 spread on roads in cold countries during winter season? ​

Answer 1

Answer:

because This salt is acidic in nature

Answer 2

Answer:

CaCl2 is spread on roads in cold countries to decrease the melting point of ice. Addition of calcium chloride over the ice results in depression in the freezing point of the ice. Depression in freezing point on addition of non volatile solute to liquid