Question

NaCl or anhydrous CaCl2bis used to clear snow on roads.Why?

Answer 1

Answer:

CaCl2 is used to clear the snow at hill stations because it depresses the freezing point of ice . when CaCl2 is added - there is lowering of the freezing point of the salt water to -29o Celsius. hence it doesn't melts the ice but loweres the freezing point .