Why is seawater salty and how does it manufacture salt ?

Question

Considering all seas are fed from salt free rivers, you would think a dilution process would happen over time

Answer 1

Salt is leached by rain from the land and although it tastes fresh there is a small amount of salt being transported in rivers.

In the sea the sun evaporates the water and concentrates the salt.

The water rains back on the land to dissolve a little more salt that runs back to the sea and so on.

Answer 2

Sea water is salty because in the early millions of years that the earth was born it rained for quite a long time. It was sulfuric acid rain. So eventually all the water runoff ended up in the lowest plces of the earth (the oceans) , but the sulfur in it was taken out leaving salt in the water. No the salt will never be gone ever unless it the oceans were completely evaporated, ther salt taken and moved to another planet.

Answer 3

There is acid rain and Mother nature has already put things out to neutralize it to salt. Example
HCL acid on cement or rock ,the acid will eat on the cement and when it leaches enough basic from the cement the acid will be neutralized to salt.
Again HCL bad acid Mixed with caustic soda bad base both hazardous . If they are mixed to produce a PH 7 it is Table salt and water. That is how Mother Nature does it. Most acid or base can be done that way thus eliminating hazardous wast to dispose of.