Can electrolysis produce fresh water from salt water?

No. The process used to produce fresh water from salt water is called electrodialysis. It uses electrodes like electrolysis does, but those electrodes are separated by ion-permeable membranes. The membranes allow the ions that make up the salt to pass through them, but blocks water molecules. read more

The process used to produce fresh water from salt water is called electrodialysis. It uses electrodes like electrolysis does, but those electrodes are separated by ion-permeable membranes. The membranes allow the ions that make up the salt to pass through them, but blocks water molecules. read more

Electrolysis of an aqueous solution of table salt (NaCl, or sodium chloride) produces aqueous sodium hydroxide and chlorine, although usually only in minute amounts. NaCl(aq) can be reliably electrolysed to produce hydrogen. read more