{"id":215854,"date":"2022-02-21T15:01:52","date_gmt":"2022-02-21T14:01:52","guid":{"rendered":"https:\/\/www.ferrovial.com\/?page_id=215854"},"modified":"2022-02-21T15:03:05","modified_gmt":"2022-02-21T14:03:05","slug":"why-is-sea-water-salty","status":"publish","type":"page","link":"https:\/\/www.ferrovial.com\/en\/resources\/why-is-sea-water-salty\/","title":{"rendered":"Why is sea water salty?"},"content":{"rendered":" \n \n
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    \n Why is sea water salty? <\/h1>\n <\/div>\n <\/m-final-content-header>\n\n \n\n\n
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    Why is sea water salty?<\/h2>\n\n\n\n

    Sea water is salty because it contains a high concentration of dissolved mineral salts deposited in the rivers that flow into the oceans and seas. <\/strong>To be more precise, it contains approximately 35 grams of salt per liter of water. These mineral salts are the result of the erosion of the rocks deposited<\/strong> in the sea over the years, causing it to reach a certain salinity index. This theory was introduced by English scientist Edmund Halley.<\/p>\n\n\n\n

    The process begins when the carbonic acid present in rainwater comes into contact with the rocks. <\/strong>This chemical compound, which results from the mixture of carbon dioxide in the air with water, has the ability to erode the rocks<\/strong> it falls on. The resulting ions are deposited into the rivers, and they later end up in the seas and oceans, producing their characteristic salinity. <\/p>\n\n\n\n

    In addition to this deposit of eroded rocks, other secondary phenomena contribute to seawater’s salinity, such as water evaporation, volcanic eruptions, melting ice, and hydrothermal vents. <\/strong> <\/p>\n\n\n\n

    What is the chemical composition of the salts in seawater?<\/h2>\n\n\n\n

    Salt from seawater contains more than 80 of the 118 elements on the periodic table<\/strong>, which makes it an excellent mineral resource for the human body. In it, you can find:<\/p>\n\n\n\n