I am aware that mineral water has ... "stuff", but I'm not searching for that. I'm talking about just club soda, the stuff you buy in the store as a mixer. The question came up yesterday when I asked my wife to grab some to make "spritzers" with the apfelwein. Nothing noisy-toity needed there.
So I snagged some of the no-name club soda (which worked just fine thank you) and it says it has 95 mg of sodium per 12 oz serving.
NaCl has a molecular mass of 58.44 g/mol. Sodium being 22.99 g/mol it is 39% of the mass of the salt molecule. That works out to 2.56 g of NaCl to contribute 1 g of sodium to a solution (or 2560 mg of salt to contribute 1000 mg sodium). My original 95 mg of sodium for a 12 oz can is now 7.92 mg/oz (metric purists please forgive me) or 1,013 mg/gal. In theory I need about a gram of salt per gallon of pure water to mimick my Price Chopper Best Choice club soda.
If anyone can find fault with my math or science, constructive criticism is welcome.
So I figure I can now figure out the sodium level of my local water and adjust, maybe even check out what the premium brand has. I like the taste of the water here so tap water will probably be fine.