Question

Why we use cacl2 to melt ice in the road?

Answer 1

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Here is your answer...

Ice normally melts to form water at zero degrees C, but if salts like calcium chloride are spread over the ice, that freezing point can be depressed (lowered) but as much as ten degrees or more.

Ice normally melts to form water at zero degrees C, but if salts like calcium chloride are spread over the ice, that freezing point can be depressed (lowered) but as much as ten degrees or more.This means that the ice on roads and sidewalks will begin to melt and run away as water even on days that are below zero degrees.

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