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Originally Posted by Michaelangelica
Boy I must sound dumb.
The question I was asking (among others) is why is it SO hard to get drinking water?
Reverse osmosis is just too expensive an option for most of the planet
I don't understand
why "there really is no chemistry of salt".
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It is hard to get drinking water, because drinking water must not contain dissolved substances beyond a limit, and water is an excellent solvent for most inorganic substances (mainly salts). So, the water that we get from the rain/snowfall, (almost equivalent to distilled water) dissolves a lots of salts on its way to the oceans and below the earth's surface.
So, the best option is to collect rainwater, before it flows down. In fact, in India there is an state sponsored initiative for rainwater harvesting. This is the cheapest option, provided there is enough rain/snow fall.
There is no chemistry of
salt, although there is chemistry of sodium chloride, chemistry of Nacl etc. This is so because salt is a generic term, it includes substances as sodium sulfide (that is present in rock salt) potaasium chloride, sodium carbonate, sodium bicarbonate, coppersulphate and so on, there are thousands of substances that can be called a salt.
