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How doe salt melt ice?

Updated: 8/30/2022
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Wiki User

9y ago

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When any mineral is added to water, its freezing point is lowered. The higher the concentration of the mineral, the more the freezing point is lowered.

Salt water has a lower freezing point that plain water. Adding salt to ice will lower the freezing point of the ice and effectively melt the ice, at least down to a certain temperature. Notes seem to indicate that the minimum temperature for a saltwater solution is -21.1°C, below which adding salt to the ice would be ineffective.
It lowers the freezing point. Salt water has a lower freezing point than fresh water.

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Mark Greenholt

Lvl 13
1y ago
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13y ago

salt melt the ice for all the sodium chloride that makes the ice lower to liquid

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Q: How doe salt melt ice?
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