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Why is sea water left in salt pans under the sun to obtain salt from the sea water instead of being kept in drums in a cool place?
Wiki User
∙ 13y ago
Because to get salt from sea water you want the water to evaporate and leave the salt behind. Setting pans out in the sun will make the water evaporate much faster than if it'd been left in drums somewhere cool. The water in the pans get a bigger exposed surface area and much warmer.
Wiki User
∙ 13y ago
Sea water is left in salt pans under the sun so that the heat causes evaporation, leaving behind concentrated salt. This process accelerates the natural evaporation process. Keeping sea water in drums in a cool place would slow down evaporation and thus prolong the time it takes to obtain salt from the sea water.
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