Salinity

Salinity

Salinity is a measure up of the total amount of solid product (salts) dissolved in water, characterized as:Weight (mass) that salt—————————— = SalinityWeight (mass) the waterUnits are defined as:• % is part per hundred (pph)• is components per thousands (ppt)• Open s seawater ranges is 33 come 37 ppt. Mean is around 35 ‰ (ppt).

You are watching: Halite sodium chloride is the most abundant salt in seawater

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Figure 7.15. Evaporation ponds created near the Dead Sea in Jordan are developed to manufacture salt.

Salinity is measure up by:• electrical conductance (higher salinity = greater conductivity)• thickness (higher salinity = greater density)At room temperature, water can dissolve about 30% that its load in salt (NaCl). Hot water deserve to hold around 40%. A brine is water that is focused with high level of salt.

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Once evaporation concentrates braided water come it saturation point, salt crystals will precipitate.Note that distinction substances have various saturation level in water.

Examples:• spring 0.3 ppt (fresh)• tap water 0.7 ppt (fresh)• border on farming irrigation - 2 ppt• Baltic Sea 10 ppt (brackish)• black Sea - 18 ppt (brackish)• mean Ocean -35 ppt• Mediterranean Sea - 38 ppt• Red Sea 42 ppt (hypersaline)• an excellent Salt Lake 280 ppt (hypersaline)• Dead Sea 330 ppt (hypersaline)

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api/deki/files/11902/precipitation_salts.jpg?revision=1" /> Salts being focused by evaporation in fatality Valley, Californiahalite sodium chloride is the most abundant salt in seawater