| http://www.w3.org/ns/prov#value | - The sulfate ions help carry the current, but they do not react at the positive electrode because H 2 O is more easily decomposed. ... so if your water comes from a well and contains dissolved salts or hardness ions" such as calcium or magnesium in medium concentrations, electrolysis might be possible, but it will not be effective in removing impurities.
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