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The addition of a solvent to water depresses is freezing point but also depresses its melting point in its solid state (ice) meaning it makes them lower. That is why you put salt on an icy road, so that it will melt below water's ordinary freezing point (0°C). Ice would melt faster in saltwater because the solvent, being salt in this case, would lower the melting point of the ice causing it to melt at a lower temperature. This is counterintuitive when it seems putting salt on ice makes it colder. This is not actually occurring. The ice's melting point is being reduced and therefore melting.

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15y ago

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