freddofrog
won 16.4k on Euro lottery :)
Cliffordski said:
crikey, it looks like Eric has hijacked Cliff's accountCliffordski said:ph7 but never mined
just as there's a difference between high diving and Cliff diving, there is more in the real world than table-salt in distilled-water in a school chemistry lesson.
A salt is an ionic compound that results from the neutralization reaction of an acid and a base. In sea-water (said to be "salty") there are multiple ions, the six major ions are sodium ion (Na+), chloride (Cl-), sulfate (SO42-), magnesium ion (Mg2+), calcium ion (Ca2+), and potassium ion (K+). The pH of sea-water is actually alkaline (pH ~8) mainly due to continual reaction with O2 and CO2 (driving it in the acidic direction, otherwise its pH would be higher) http://oceanplasma.org/documents/chemistry.html
There are many types of salt (not just NaCl), and when certain soluble salts are dissolved in water the resulting solution may not be neutral, depending on the composition of the salt (the ions which it is made up of). The solution can be either acidic or basic (alkaline).
http://www.chem.purdue.edu/gchelp/howtosolveit/Equilibrium/Salt_Solutions.htm
Thus Brine can range from acidic to alkaline, and in some tinned foods it is deliberately acidic
http://www.horiba.com/fileadmin/uploads/Scientific/water_quality/Documents/Application_Notes/HIS/04__-_pH_of_Brine_For_Canned_Food_Testing__Hi-Res_.pdf
Hence "salty" can be an acronym for alkali, or for sour (acidic)