Question

why is salt sprinkled on icy roads in cold countries​

Answer 1

Answer:

==>When added to ice, salt first dissolves in the film of liquid water that is always present on the surface, thereby lowering its freezing point below the ices temperature. Ice in contact with salty water therefore melts, creating more liquid water, which dissolves more salt, thereby causing more ice to melt, and so on.

Answer 2

Answer:

Water in cold countries freezes up to form ice making the road slippery and dangerous for travellers.

Thus salt is sprinkled, so the salt molecules make it difficult for water to form ice, hence reducing the risk.

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