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Sodium choride or calcium chloride is us...

Sodium choride or calcium chloride is used to clear snow from the roads. Why?

A

Antifreeze mixture of `CaCl_(2)+` water `(f.pt.-50^(@)C)` prefected over `KCl+` water `(f.pt.-10^(@)C)`

B

The low freezing point of aq. `CaCl_(2)` solution is due to its van't Hoff factor `i=3`.

C

The use of antifreeze for salt solutions causes major problems of corrosion of steel car bodies and reinfcerecement bars in conncreate road strucntures.

D

More is the amount of slat spreaded on road, easier is melting of ice.

Text Solution

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`DeltaT_(f)=mK_(f)i`
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